Well, at this point, the requirements of making a good jam have been mastered by you, so i wont delve much in the perfect length duration and whatnots.
Again, a super strong entry. You made a hybrid of púzzle/battle/shield system and its quite fun. the shifting between your characters its super fun and of course a medullar part of the system, You always recommend other ppl how they should expand their jams to full fledge games and this I think, you should do on this one, cant imagine the variety and complexity of having 3 or 4 party members that combo and adapt to various barrier problems.
As always im impressed by your entry Human, but this one I think its my favorite so far, seriosly, develop a full game with this mechanic and story.
Also, I love how you incorporate your family in your dev passion, it really adds =)
Congratz!