I don't think ilvl should be removed. I didn't like it at first, and I'm not fond of it now, but it's here to stay and it would require significant resources to transfer everything over.
When ilvl first hit, the very first stuff was ilvl 100. There was 106, 113, 115, 119 and probably others, because this gear increased in power. While Kariyeh (the bayld stuff) made a mockery of our previously-hard earned gear. Manibohzo (delve 113 plate) laughed at that. It was sensible that this stuff was higher ilvl because it was clearly more powerful.
But now we've been stuck at "119" for almost three years, and the gear just keeps getting stronger and stronger. I realize that if our current gear said i129 on it, newbies in sparks would feel overwhelmed, but it's deceptive for the game to let them think they're so close when they're miles away.
It makes the players look like elitist when they look at someone in "full 119" and tell them that their gear simply isn't good enough.
And if you're a nice guy, telling someone that--or being told that, really really sucks.