Honestly, I am not TOO hurt by the Q change. the reason i hate it is that they did it at the expense of his R. I could care less if i get two minions with Q, but loosing 200 damage on my ult for it? not okay. Not to mention they raised the cooldown on it. so getting those two minions becomes a necessity in order to stay on par for damage. Overall it is actually quite a big nerf.
5.5 is a huge step in the right direction. but i want to see Veigar's W drop time reduced and maybe add a slow to it. If they do that and lower the base damage slightly, then bring his R back to its former glory. I think we are back on track to have a good champion. Then they just have to bring his Q back to its lower cooldown. I also think that they should lower its mana cost slightly if they want it to become more of a farming tool than harass tool