As the global release comes closer, I just wanted to check back again, I cleared the last regular quest last month and now have the golden "Clear"-badge on every single rank in Solo and Multi. Took me about 160 hours, after clearing everything (and lots of GQ) in roughly 250 hours in MH4.
Also have 3 Lv140 Guildquests and will play those for quite some time now to create the perfect set with some badass LV10 guildquest-weapons. Also there are some event-quests that I haven't touched yet.
A very enjoyable expansion to MH4, although I thought it was kind of strange that there was absolutely nothing new in Low or High-rank, which seemingly gave some people the impression that there wasn't much content for players who previously owned MH4, but I myself am quite satisfied.
Also of Note: I just recently upgraded to the New 3DS, the framerate is indeed better on the n3DS compared to the regular 3DS. No framedrop in the G-quest lobby with 4 players online, and during quests the framerate is also better (about as smooth as MH3G) compared to the old 3DS. Also loading-times are a little bit shorter (most obvious when returning from a quest back to the lobby).
Looking forward to hear impressions of the community once the localisations drop.