From solo player perspective changing from 4 to 8 ppl raids without scaling bosses' HP (like it is now after Rise)? Hell No! I dont wanna fight Arkana or Aes for about 50min with an average gear. Dont get me wrong I love my fights last for 15-20min but 50? It is way too long.
I personally don't like "combo mechanic" either, I think it would force people to play as safe as possible to keep their buffs, dodging would be priority, no more risky but rewarding/cool looking moves. Did you see Ein Lacher gold medal vidoes on youtube? Its just so sad looking fights...