So to reiterate; This is the English section of the forum. Please use English.
To address your points
1. Epic equipment is in Epic Packinko for a reason can be obtained by placing in Contests
2. In game currency will Never be able to be traded for Kobans
3. The French translation is not enough for me to know what you are suggesting.
4. That's essentially epic Pachinko?
5. Gear needs to be reworked to be functional in the first place before that would happen. As the devs would say, that's a "nice to have feature"
6. The tower of fame will most likely be reset at one point. Again, I'd wait till a re balance.
7. When it comes to a lot of money, it will be worth it.
8. Sending out girls for things has been rejected in the past as it is redundant with having missions.