I saw some good ideas in this thread and I hope they're at least considered.
My idea for a better maple update would be to revamp the nebulite system.
Remove D nebs entirely
Allow nebs to be fused using mesos only (could have a high cost to add meso sinks for fusing B and A)
Remove ability for fused nebs to tier down
Increase tier up rates
Allow nebulite boxes to actually drop everywhere
Remove nebulite box expiration (optional)
Add S rank nebs (optional)
Edit:
Oh a small commerci update would be nice too. Specifically we should be allowed to use drop rate to get more commerci equips and cubes. I realize this may have to come with a nerf to the base rates but we should be able to use drop rate buffs, equips, event, and cash shop tickets in there.
The meso limit does need to be increased because in gms there's not any strong meso sinks which has resulted in mesos compounding and their value decreasing. Many items now sell for over cap.
An alternative option for the meso problem would be to bring some of the meso sinks kms has to gms. Meso market, 25 starforce, tradable cash shop cubes, etc.