Honestly, I am against mega-servers as they've proven to ruin all RP communities they've ever touched (GW2, ESO, Wildstar)
If you want megaservers, at least leave Ebon Hawk and The Progenitor alone. The issue with Megaservers is that you usually can't see everyone as it's limited to how many players can be on screen at once. And the RP events in this game are freaking gigantic with 50-120 people usually participating on Ebon Hawk.
There's also the case about trolls and non-rpers which'll ruin what we have on Ebon Hawk.
What you could do is to merge the non-rp servers though. I think that would definitely be the best way.