I'm going to be amazed if someone good would buy Eclipse. Virtually all of Eclipse is worthless, and the thing that is worth the most, but virtually worthless is the email list. Quite frankly there are a vast swarms of wholly incompetent people, shitty people, bots, and honestly I wouldn't be surprised if there's a dead person or two on that mailing list, so really there isn't a point in using it when almost all of the good people have explicitly walked away with intention to never return in any meaningful capacity.
What any game development community needs now is, like everyone has said for a while now, new and interested talent, and a new source base that is not in Visual Basic anything, and Intersect is the closest to being there, but from what I've seen with a decompiler, Intersect has the same pitfall of Eclipse Origins and its predecessors, a core structural design that's now nearly 17 years old.
Basically, the mailing list is virtually worthless, the data more so, so what reason do we have to keep it around?
Sure, redirect the domains to here, or even to the Mana Source project websites (which has arguably been a superior and from what I am aware independently formed sibling for years now), but other than the domains we don't need what's left. Using or trying to use the rest is like eating crumbs in a sandwich shop to prevent your inevitable starvation.