Hi! I love the game, and I love that you've been patching/updating it so often.
I suggest having a new Backpack-esque item that gives you an extra baby slot. I'd personally have it be available at all times in the shop (like the charger replacer token thing), but maybe make it cost 133-150 coins so that you can't just buy it early and be good for the rest of the game.
In addition, I'd probably decrease the cost of the item that replaces used chargers, like have it be around 50-66 coins instead. I just find that buying passive items instead is much more valuable overall.
Also, I personally think you shouldn't be stuck with the same exact 4 babies at the start of every run; I know the first level's always quick, but it's still kinda boring starting like that every time. Maybe just provide the option to randomize Brother Bobby at the start of a run?