At new ideas at 13/10:
1. The dimensional locker is good, summoning some wifu, maybe try to put them into good use. Normally, they should be so versatile, try ask them for helping our big plan by their unique ability. If not, they just as same as ordinary people like another, except their costumes.
2. Keep continuous to the first point above. You needed to "serve" them after summoned, you can case their special ability for once after you served them for each time, or storage them inside the clever locker to obtained their passive ability temporarily.
3. Keep continuous to the second point above. Of course, you can abduct the wifu more then one time to get more ability usage. Some ability can cause when wifu inside the locker, some ability needed to cause when she outside the locker, or some ability still functioning after she left the screen, depending on the wifu.