Suggestion for crystal drop rate
Make the drop rate increase based on both contribution and time spent in FATEs. One thing I hate is having a good party that goes through FATEs quickly, then falls apart abruptly as people finish in an area, leaving 3 or less people to down (or fail to down) an entire zone of buffed FATEs, spending a large chunk of time and going TP/MP starved in the process. And the end result: no crystal drops. I understand FATE scaling is necessary, but if it can't be tweaked any more, then at least consider the players having to deal with it.
Furthermore, special FATEs such as Tarasque, Darkscale, and Metal Gears 2 are being ignored completely because they require more effort than they're worth, and new players that would like the achievements/glamor items/barding/TT card are getting left out in the cold. I personally have never seen Vedrfolnir Devoteth or the last part of the Coeurlregina FATE chain. The same suggestion could work for these, possibly (if not too much to ask) with a 100% crystal drop upon completion of the achievement awarding FATE.