Suggestion: EXP Bank

[StouterTaru]

I think this would go really well with SE's promise to add EXP to the level 50 dungeons (which I think they said we were getting in 3.1) and help with the annoyance of accidentally of completing your Challenge Logs while doing end game grinds like EX Roulette and Alexander.

Speaking of challenge log, have they mentioned fixing the challenge log exp for DoW/DoM? Exp as a percentage of level scales for DoL and DoH after 50, but the battle jobs are stuck at dinky exp rewards. That 10% of tnl reward <50 turns into less than 1.5% at 59.