I think the window for a merge has passed: Jung ma has a lot of f2pers - it's not near death in that arena. End game is having problems, which actually seem to be getting worse - I would jump at a transfer option. But the starter and intermediate worlds are very active even now.
Which means at least some of said F2Pers will eventually level up to max level and subscribe.
I guess we're all kind of waiting to see exactly how many will, instead of just finishing Tython and leaving.