Hey Bigtpsychoboy! Thanks a lot for the comment, we too think this game has a lot of potential and ways to grow! Co-op would indeed be fun, it probably would have a feeling similar to Overcooked, going around carrying towers and positioning, it might be super fun!
We are starting an indie career now, and if our first few games succeed, we for sure will tackle a bigger version of towerbag!
Sorry for the late reply tho!