You realize this is no different than making sor not effect it, and making it so that the flying weapons thing doesnt work since you can just play it that turn.
It's close, but not exactly the same:
1. Not being able to use SoR with Mitosis would be
counterintuitive. Elements community don't really need more situations like that. *points to combo Voodoo Doll + Twin Universe*
2. Card going into hand and playing it - costs same amount of quanta, but that will trigger
Neurotoxin.
3. Card going into hand is
blocked if you have 8 cards in hand already *points to
problem faced when overusing Hourglasses*
So
if Flying Weapons or SoR combo proves to be OP, best way to fix those things is making the Mitotic Daughter Creature go into hand instead.
If those combos aren't broken, then they don't need to be fixed.