Yes we did the time limit mainly to try and fit more into the theme of the jam but will most likely change the way the rounds work going further to make it more fun. Definitely like your suggestion of immediately paying out, will make the crowd basically pay you for being fast and impressive and then allowing you to calmly upgrade your weapon before the next round.
If you want to follow development of it feel free to join our discord for the game where we will post the updates on the game.
https://discord.gg/Ayep4HMP5u