Nah I loved killing Uruk after Uruk. I remember I had one who just kept coming for revenge like literally 5 times. Each time with his face more deformed than the last until he just had his face wrapped in rags (as he was incredibly weak to ranged and could be one shot killed with a headshot every time). It was really cool. It's like in movies or tv shows where the hero has that one small time bad guy who never goes away to the point where the hero will just kinda mess with him before putting him away yet again. I would get done with a story mission or killing a Warchief or just walking around when randomly I'd hear "RANGER!!" and see him and be like "oh it's you again! Back for more?" And just walk up to him and just dodge or counter his moves to mess with him before putting him down with another headshot again. God the nemesis system was so cool in this game