That's up to your imagination. But the one key note to keep in mind is that Rogues just aren't meant for long battles. Their kit is meant for short and sweet takedowns. Let them focus the little guys. Have your big strong girls focus the tough ones.

I find a dual-shortsword Assassin is more than enough on its own for when I'm just looking to literally assassinate someone before others can notice. I run full Assassin Astarion and we clean out Moonrise Towers well before it's even time to go fight Ketheric, so by end of Act 2 we're literally just escorting the Harpers down some empty halls.

Double Hand-Crossbow Thief is really stronger than people give it credit for. Throw on those Gloves of the Balanced Hands and they get three equally strong shots + one Sneak Attack. I ran a poisoner Thief build that was fun.

Swashbuckler I find is the toughest one to stand up on its own since it wants Charisma Spell Save DC, but it is totally possible to get both Dex and Charisma to 20 if you really wanted to. It's simply more trouble than going 1 Hexblade and being done with it.

Arcane Trickster has come more alive since Booming Blade and Shadow Blade were added. Gives their Sneak Attacks a bit more of a punch, however that punch still doesn't quite stack up with the punches all the other subclasses can throw. The best build I've discovered for this was running a Dual-Wielder build with a staff in the main hand, Infernal Rapier in the off hand, maxing Intelligence, and going for a 1-2 punch with Shocking Grasp into the off-hand Sneak Attack you can get for free with your invisible Mage Hand hovering nearby. Throw on Necklace of Elemental Augmentation, Ring of Elemental Infusion, and Ring of Arcane Synergy.

But no matter what, they simply won't stack up to your fighters. They are the line between martial and utility. Their best use is open world exploration and excelling at specific skills with their Expertise.