It has ruined the cat-and-mouse feel; bad change.
It has emphasised the need for stealth; good change.
It's done nothing to change game-play and mechanics.
You shouldn't get an incog, silent, or hidden bonus if I spot you and try to stun you.
ACR has good intentions,it really does.Its just:
1.They are not done properly (like 99% of everything in this game)
2.Its still A BROKEN MESS.
3.They didn't think things through too much,obviously.
On topic though,I think the target has too much power,with contested kills and the new stun range.
But If I've build up Incog, I should get at least Silent out of it.
I actually think that (another of my older suggestions) Contested Kills should be worth 0 points, so getting spotted means you don't get the usual 100 point kill bonus. Also means you don't get points for Hidden or any other kill bonuses. No change to the Silent or Incognito bonus, no dropping to Discreet, etc.
How I want it in AC3:
Contested kill remains but only gives 50 points, no longer affects kill bonuses or slows the killer down.
Remove massive stun prompt, keep stun range the same.
Can no longer stun NPCs.