Sorry for the necro, but now ALLM has this suggestion site.
LuniaGlobal - Action Arcade RPG
You guys should go suggest whatever you wrote in this topic.
And yes, it actually works. They actually replied to a suggestion of mine (albeit in Engrish) but it wasn't an automated message or anything silly like that. It was an actual reply. I suggested making Raids more useful by:
A.) Giving better Stage Equips with either better stats or more useful set effects so not everyone would be scrambling for Rod 4 stuff.
B.) Offering an alternate way to get Myth Boss Item Boxes (i.e. Myth Yeti Cave would give Lunia Spirit Item Box, Bigtalk/Heartgear would give Soldin Spirit Item Box.)
C.) Shifting focus away from Myth stages and into something else for once.
I guess they're desperate to keep the Lunia Titanic afloat.