I'd like to add my 2cents on the subject, and maybe it was said before (I read some of the threads, but not all of it). First, I believe that the root of the problem is quite simple: the players believe they have to compete for the resources of the server. But IF good and evil were like two sides of the same coin (the server) and had only competed when they wanted to, most players would be tolerant of each other. After a while, anyway. As soon as both parties could have a life, then it's a matter of "Here we have our goodies RPing, there we have our baddies RPing", both exist in the same world, which is EXPANDING by their efforts in different directions. And conflicts between prominent characters and organisations fall into DM supervised grey area to be resolved. This is not at all like separating surface and underdark, for example, so to make two sandboxes for good and evil groups, but simply support both.
I don't believe RP of Good to be much easier. Sure, it's less awkward to share goodly themed conversations, rather than admit your Evil heart, but honestly. Being actual good, aside from fighting monsters, is also a great way to annoy great many people, who are neither good, nor evil, as those two in DnD are cosmic forces first and moral areas second. And then there could be Team Balance with something to do, minding both extremes.
It seems from what I read that at the start of the original thread it was like it was a decade ago, same old fringe existence for Evil characters. That's tragic. Evil characters can be interesting to try, and often times Evil characters will be charming in their own way, not to mention antiheroes. What was happening, though, is disempowering of Evil party. But if we consider Evil PCs also as cut above the norm of general evil populace, we could sympathise with their struggles and ambition. But that's only possible if neither side is going to dominate the server. It's a horrible feeling to be an oppressed minority OOC side and condemned by other players when they uncover your evil chars. That I believe comes from mixing RL survival issues with IG actions. Any player should feel safe first, not having to deal with PCs of different alignment if they don't want to. We also don't always aggree on how to interpret an alignment. But underneath all disaggreements are limitations, like if one feels threatened OOCly, if their consciousness in general is far from being clear, and they don't have much energy or life to be genuinely creative in their RP and accepting of others, or things happen just to darn fast in this game when you have to type things in real time, which I always struggled with. It would be nice if we could be openly Evil as well as Good and socialize, party withouth being "an impostor among us", when your evil toon wants to join a grinding fest alongside some crusaders. I'm exagerrating a bit, but it was common in my time

I put on my robe and a wizard hat...