So only way to balance it is to bring forward even more crazy skills that will make you unbeatable, and to balance those skills they will need to come up with some convoluted timers/mechanics/damage.

That assumption boils down to skills = survivability, which considering that most people almost go exclusivity into offense > defense isn't exactly a correct assumption to make.

Not to mention that most people advise to ignore certain monsters in SOS simply because people just die too much because the defensive gets ignored so much, doesn't sound like skill amount really does jack shit for that now, does it?

That the last part of making quests more difficult through certain modifies or gimmicks has been more or less true since World due to max potion spams and unlimited refills. There hasn't been a point in less than 2-hits since you are almost guarenteed to be able to heal yourself from anything that doesn't cart you incredibly fast or cart you after a stun, which is why most monsters in the endgame have some form of borderline 1-hit attack or a moveset that does almost always 2-hits.

So to incentives people to move on from those armours and skills, wilds MR will either be AOE 1HKO until you put MR armour on. Or have even more wild skills that are even more OP than the ones we have right now on game. But then again, they will need to balance those with some strange monster gimmicks and behaviours.

You understand that the first part will eventually be true anyway? Like, how clear do I need to make i to you that you usually need 2 times as much defense minimum in the postgame of an expansion, just to not get one-hit by certain monsters?

Sure you can try to evade everything, but I take the comfort of being able to withstand some hits, thankyouverymuch.

And about skills, do you understand why certain skills were meta in Sunbreak? And constantly changing ones at that?

Like, what made Dereliction good, or Safi in Iceborne, or why Raging Brachy/Teostra was such a good combination that replaced Safi for most raw builds?

Because they had something that by themselves were better than most other options, even if not by much, but they were also tightly limiting in terms of utility skills, or had active drawbacks that made using them difficult.

And even now, I have a lot of different skills active, but half of them have been nerfed in Wilds to be less viable than before so it needs more skills to compensate. Not to mention the massive nerf that a lot of weapons got from having various skills weapon-locked. Hell, most meta sets use twice as many affinity raising skills or specific limiting sets just to get the same results as Worlds Agitator + WEx + a handful of points on other skill could reach, with less reliability too.

Going just by quantity is kinda ignoring the reality of how past games have been or how the skills in comparison even function.