good idea op and i agree.

more leves in no way would lessen partying or any other aspect of the game. end game quicker?..a small bit maybe many players already have capped jobs and the game has even really begun yet.

ppl play differently, allow a choice for more leves , it doesnt mean everyone will do them.
those that love to party will still do so, those that love leves will do them, and those that prefer grinding will continue.
no harm in increasing amt alotted nor decreasing reset.

dungeons will soon be on the way as well. excellent, more choices to what ppl can choose is always a good thing. should never limit one playstyle over another , thats just selfish.