Yeah true and what not, I just honestly see it ENDLESSLY trolled.
Esp. once free2play rocks up man, I know there's gonna be trolls in general ofc. But holy shi- a f2p trolling an RP server would be a massive nightmare man. Just my personal opinion, it's way too abuse-able :/
My 2 cents only ofc, and I wouldn't personally mind at all if it was an entire merge. I just can't see it working at all.
The best way to solve it then would be to merge pve - pvp and let the roll players transfer if they want. But your point about f2p and trolling, same thing will happen on their server, people will roll on their server just to troll the RPers.
I think it's less of an issue then them having no one to play with because their server dies.