Yes, for now I have 3844 gems saved (because I want all the characters aces -I got the 3 of them fast when I opened the boxes-) but I am not going to reset the box for 3 junk warriors; I would rather wait for the UR dream ticket to get it.
Because I want to use the ace monsters with a different protagonist that has a good skill and 2nd I play a 30 card deck every time, so I hate when I have extra cards and no way to search them immediately in MP 1 (I know the less cards the more consistent the deck is, but I feel I have more options when I play a 30 card deck for unknown reason).