There were some really great challenges in WoL to make the campaign more difficult and replays fun, anyone have good ideas for this one?

A few I think are good candidates are:

-No Kerrigan upgrades
-No unit ability upgrades
-No evolution missions
-No upgrades ingame
-No queen production
-Zerglin/Muta army production only or Zerglin/Hydra army production only


Or obv combinations of them . Though I'm pretty sure all of them combined make normal near impossible :p.