Well, naturally, nekoBT is quite new. I was more talking about the interface and filtering options.

Also nekoBT allows linking and importing of nyaa accounts, so it should be quite easy for uploaders to move their stuff over.

Yeah, currently releasing show seem to be the most active (but pretty sure that's also the case on nyaa).

Does it specialise in niche anime?

Not specifically, but I've seen people uploading some rather rare and old shows, for example the gecko/geckyzz group is also releasing on nekoBT.