It is still kind of fun, even though the bugs are somewhat baffling.
Being able to speed up the game is good. But it does interact with targeting in some way.
Smart targeting is a good idea. Though there is def something fishy about how it works with many weapons and fast targets.
It might take more than a three weapons to trigger the bug.
I don't know if "conquering" places in the world map does anything, but being able to filter or sort by difficulty would be useful.
Maybe the ability to set up a queue.
When upgrading the type of a weapon, it doesn't lock out the other options. You could switch back and forth, but that would of course be worse than useless, as it eats the "upgrade".