Sell guild experience Emblems on MT traders for a reasonable price. This will really help boost the consumption and production of Mighty trophies for everyone. Making more people work together to level their guilds for better stats. Also, this will encourage any group of people playing iris to create more guilds, get more people, without the need to worry of such slow leveling.



Next,
Allow ALL Insane bosses to drop Rare IV cards (all stat iv, all def IV, eva IV) or more popular contents such as item seal scrolls, Water spirit pieces, or a good bunch of MT. I believe this will help motivate the "bored" ones to run an insane dungeon at least once a day. At the moment, the insane dungeons are not-worth going for specially when the new tier of weapons have arrived. Unless of course, we are helping someone who needs them for the chain quest. CH is still much more efficient to repeat because of the decent final boss drops, as well as the MT u can gather per run even though DI and LI are supposed to be better and harder. I doubt this can be abused at all, given how hard the insane dungeons are and the price of dungeon reset cards. This can also work well with my Guild Emblem suggestion.

3rd
Add more consumable content in BF vendors such as untradeable HP/MP potions or untradeable event foods (at a high but reasonable BF point-price of course) This will also give people more reason to farm BF points from time to time = more DM/FM activity.