To the OP - many MPQ vets are playing MSF at the moment and loving it!
In MSF its significantly less play time per day vs MPQ, and also it's split out during the day (not at set times) so you don't have to spend 1h 30mins in a block doing PVE end grind and new sub clears.
That and the alliance raids are great fun, require ally planning and actual coordination/ team work.
I've been playing ~2 weeks and loving it. It's a new game with a fairly new community which is always refreshing.
My time with MPQ definitely feels like it's coming to an end - the actual mechanics of matching 3 I still enjoy, it's just the game that's been built around it that is stale, time consuming and ultimately at the moment very unrewarding. FYI I'm a day ~1300 player and have probably sunk in the hundreds of £ over the 3.5 years I've been playing.