If a new game is ever made, I believe that in the next one you should allow us to be able to make our own tank by being given a list of weapons and allowing us to choose so many per level. It would also be really neat if you made it to where we could customize or choose our own bubble tank look too,
 "Zomgies 2"){kind=icon}
 "UPGRADE COMPLETE!"){kind=icon}
 "Bubble Tanks 2"){kind=icon}
 "Relive Your Life"){kind=icon}
 "Monsters' Den"){kind=icon}