1. You've just nerfed 'casters' using it as an escape spell and thus removed much of its worth/utility.
2. All you've done is delay it, hidden comes eventually when they give up looking.
3. What difference does armour make if you're not getting hit anyway? People would just use light armour.
4. That's a rather sweeping change all because of one tiny thing you ran into? What would the impact be on every other combination?
5. You don't need the top sneak skill to do what was shown, not by a long shot.
See, not that easy to fix, is it? Honestly, it isn't hard to become stupidly powerful in the game, it really is not. Asking the devs to make YOUR experience harder by potentially screwing loads of other peoples characters is a bit selfish, given all it takes is you NOT playing like that.
1. Not really, 50% effective is still good, and as a caster, its meant more as a defensive ability isn't it? If you use it to attack before combat begins it would functionally be the same, but being detected should slightly negate it, since you should in theory be able to swing wildy at where you think the person may be, or watch if footsteps and other subtle hints give them away.
2. Perhaps, though there would have to be other changes to the behavior of the Ai in that regard.
3. That is a different problem entirely, since you can apparently reach the incoming damage reduction cap with light armor alone.
4. Not at all, I have never been in favor of percentage based increases, as percentages have a cap. Having a contested modifier ensures that you will always need greater stats/bonuses. Trying to sneak at level 40 against a level 50 npc? Maybe you can equip a set of gear that increases your sneaking ability to bridge the gap in ability. At the same time, having diminishing returns ensures that stacking up a lot of increasers become less effective the more you have, preventing them from getting too far out of control.
5. Maybe not, but again that is another problem that would have to be remedied in some way.
I argue that it is just as selfish to demand that things are kept as they are, when clearly there are some people who are discontent with it. I am not saying they should completely break the game backwards in the other direction, as that would not be proper balancing either.