I'm all for the ilvl compression. Obviously, with ilvl compression would come a drastic change in mob healths as well so that at level 90, for example, you would percentage-wise still have significantly more health than a level 60 dungeon boss, and still do significantly more damage than a level 60 would to such a boss.
Right now the stats are just insane. What they did in Cataclysm literally blew the numbers through the roof. We went from ~5k tank health in Vanilla to about ~10k tank health in BC to ~35k tank health in Wrath to well over 175k health in Cataclysm. I'm just going with the numbers I'm familiar with, tanks in heroic gear/average raid gear.
My druid has 15 times more health than I did 15 levels ago. If you want to spread that across 15 levels that's like my druid doubled in health every level (obviously it happened in huge increments at 80 and 85, but just to give it an idea).
I still really don't understand why they made such a drastic change. They try and explain why they make changes in stats, and I understand that. But looking at the damage meters from BC to Lich King. Mediocre DPS in heroics went from about 600 to 1200. It doubled. Okay. Then we get to Cataclysm and they decided to triple it. We don't go from 1200 to 2400. We went from 1200 to 6000. And I'm talking about the average Joe in blues and greens.
I would much rather be dealing with numbers that are far easier to deal with. I don't mind losing 20,000 stamina as long as it feels the same. It may feel weird...but I don't really care. Scaling is so out of control now its a laugh.