This is an interesting game. It's cool to see someone else implement the mechanic of having things stick to the player. I'm a little curious about the technicals of how you pulled it off, because my solution (using Godot) was kinda messy.
I'd like to see the trade-off of more weights making you more difficult to maneuver explored further. As it is, there's no incentive to go above the minimum requirement, so the best strategy is to stick with the minimum required (plus what's needed to make platforms). It would be interesting to see some sort of reward for having more weights than needed at the end.