I'd love to see a larger community around on master D but its dropping off quite sharply.
The onyl problem I see with a server merge is the fact the pvers don't want to be ganked, at all ever. While i don't have an issue with this myself it will be a technical problem (pvper shards only???)
For me the benefits of losing the ability to kill any imp i chose at will be massively outweighed by a thriving player base like Master D had at the start of xfers.
Its still so very
easy to gank pvers on a pve server.
OT: Merge all into a pvp server PvE is garbage anyway