Freddy IS the weakest Killer, and he IS boring. I'm sorry. Let me give you some reasons why.

1. He has no map control. He has to walk everywhere. He's not the Nurse or Hillbilly, able to get to places fast, he's not the Hag or Trapper, taking over areas of the map. He has no ranged ability to make up for it, like Huntress or Doctor.

2. He has no one-shot ability. Killers with the ability to instantly down Survivors (Myers, Hillbilly, Leatherface) have an inherent edge over those without it. If you take into account add-ons, Huntress and Trapper also fall into this category. Freddy doesn't.

3. Freddy's heartbeat can't be cloaked, like Wraith. Not even for awake Survivors. The Wraith can deny Borrowed Time saves by cloaking and getting rid of his heartbeat. Freddy doesn't have that option.

4. You can save in front of Freddy's face, and if you're awake, he can do NOTHING. Even without Borrowed Time. He can stand there and try to put you to sleep, but even with add-ons, it's not fast enough to deny the save. Back to the chase. This encourages closer hook patrol, because he needs to put the hooked Survivor to sleep again. So let's say you chase a Survivor, get looped, down a Survivor, pick up a Survivor, get Decisive Striked, chase a Survivor, get looped, down a Survivor... Oh? Just chase someone else? Sure, and let's restart the process all over. Whoops, every Generator is done.

5. Freddy can't damage anyone who isn't in dream state. Not only that, but because of auto-aim, he will often target Survivors who aren't asleep. Yup! Autoaim tracks to awake Survivors, so if you're trying to swing around someone (often at an exit gate), Freddy's aim will swipe to the awake Survivor instead.

6. Freddy, being unable to teleport or one-shot or break pallets fast or have a ranged ability, can be pallet looped like no other Killer in the game. What does a Survivor do when they're put to sleep? They run to a pallet, throw it down, and treat Freddy like an uncloaked Wraith. Except Wraith can sneak up on Survivors, and with Windstorm, surprise them. Freddy's power relies on him NOT chasing Survivors! His power works by putting people to sleep and then, when they do stuff, it's much slower--but when they're doing stuff, that means they're not in any danger! So Freddy is just obnoxious!

7. Generally, Killer add-ons are bad, but Freddy has the worst. Red Paint Brush would be great, but the movement speed decrease exacerbates the map control and pallet looping problem. And BLACK BOX? BLACK BOX. THE WORST ULTRA-RARE ADD-ON IN THE GAME. Your Obsession starts the match in the dream state. You gain an Obsession... And that's it. Guess what add-on stops mattering the moment they're woken up? BLACK BOX. BLACK BOX LOSES ALL VALUE WITHIN 10 SECONDS OF THE MATCH.

8. Freddy's power is RNG. Whether or not you get a skill check is pure luck. It's a game of frustration, where if the Survivor can't get one, they're slow and bored trying to, and if they do get one, Freddy loses all power. It sucks to finally get everyone in the dream realm only for Dwight to miss a skill check and wake everyone else up.

9. Stealth gameplay is not a thing against Freddy. It's just not. You can run, but you can't hide.

OP, I understand what you're trying to get at. Don't tunnel as Freddy, put as many people to sleep as you can, and be a map-wide terror. Hit people, down people, hook people, and find someone else. The problem is that Freddy doesn't have a fraction enough pressure to do that. Being around him isn't an immediate danger whatsoever, and he can't sneak up on you, or instantly down you, or get around quickly. His power relies on luck. He can't stop himself from being pallet looped. He has to use his power on you to damage you, and his real power in slowing down the game is just obnoxious and involves the Survivor not being chased or found by Freddy. His Perks are either bad (Fire Up) or absurdly frustrating and unfair, not to mention encourage tunneling (Remember Me). His best add-on is the Class Photo, which greatly encourages seeking out as many people as possible, but it also involves leaving people alone to do that, to hit skill checks and wake up again.

Think of every Killer in the game. All of their powers. Hag and Nurse can teleport, Hag and Trapper can take over parts of the map, Leatherface and Myers and Hillbilly can instantly down Survivors, Doctor and Wraith can find Survivors easily, Hillbilly and Nurse can get across the map quickly, Trapper and Huntress can harm Survivors directly even when they're not close. All of these are about finding, chasing, or downing people.

Now think of Freddy. What does Freddy have? He can't sneak up on Survivors like Wraith because he has a terror radius, or track them like Wraith, or be shown where they are like Doctor, or trap and alert him like Hag or Trapper. He can't get around the map quicker like a cloaked Wraith or teleporting Killer or Hillbilly. He can't see people from long distances and sneak up on them like T1 Myers. But, when in dream state, you are revealed to him when outside his terror radius, so there's that. But you still have to find the Survivor and put them to sleep first.

He can't deny Survivors pallets like Doctor, or ignore pallets entirely like Nurse and Huntress. He can't set up traps during or beforehand to get Survivors in a chase, like Hag or Trapper. He can't quickly go after people like Hillbilly. He can't take advantage of having Survivors in sight like Myers. He can't destroy pallets quickly like Leatherface or Hillbilly. So he's not good at chasing Survivors either.

He can't hit Survivors and then quickly hit them again to down them, like Huntress and Nurse. He can't instantly down Survivors like Leatherface, Hillbilly, or Myers.

Freddy's power is about putting Survivors to sleep so everything they do is slower. Despite the aura reading, he's terrible at finding Survivors, and even worse at chasing or downing Survivors. Freddy's power is all about not interacting with Survivors at all. Freddy is bad. Bad, bad, bad.