There a lot of sets with diff effect.. and it can be like joke when u run and no greatsword user in party and drops items for them. So i suggest changes:

1) Drop only for classes which currently in dungeon. If there is no snipers or sharpshooter dont drop any for their classes

2) Can trade 2 epic items of any set for 1 which u need. Example: u have 1 cap for healer with MP and one with HP and u can trade for 1 cap with - cast effect

3) Can trade 3 any epic caps for cap of ur class, excample: u have 1 cap for tank, 2 for snipers trade for 1 for healer.

Thanks.