Evolith was terrible, and it still is. I'd much rather they spend their time and effort making new things (new addon series, new expansion, new battles, new hnm's, etc/) or making changes to existing parts of the game that aren't worthless to begin with (such as the upcoming Dynamis changes, revamp some other stuff, such as Einherjar, Salvage, general Mythic acquisition, expanding Nyzul Isle as I recall it being coded for uo to 255 floors).

There's seriously so many more options out there between new stuff and not stupid existing stuff that if Evoliths get any attention I'll seriously be pissed off. The new dev team is fantastic, but they likely don't have the manpower to fix everything that could use fixing, and as far as priorities go, Evoliths is pretty much at the bottom of the barrel in the bottom of a trailer of barrels in the bottom of a cargo ship that has been filled to capacity with other trailers also full with barrels... except this particular barrel is currently full of dung.

TL,DR; Evolith is complete shit, and "fixing" it is a waste of time that could be put to better use.