I've played several years of Eve, back from 2003 to 2009. Got pretty far, joined a big corp with lots of allies, experience 0.0 gameplay. It's fun but very draining. Ops were long, mostly idling or travelling, a few seconds of combat, as you get focused fired and have to warp out immediately or die.
Then I stopped doing that and went with low-sec PvP, flying solo or in a small group, it was a lot more action packed but again quite shallow because it ends up being just about preying on fools or noobs.
The flying & combat UI was also quite clunky, they never really fixed that, but its due the scope as well.
I still think a slightly simpler version of Eve, made with a better flight UI, and better PvP design (less scale/scope & more balance) would make for a very fun game, even if its 2D top-down (Starsector + Eve-lite anyone?!)...