Good point with the logo, but I simply wouldn't physically be able to make it since I got the itch page set up right before DD after an entire night spent finishing all the shit up. However it might still be a good moment to change it while the itch entry is still fresh.
Shells aren't really that important in comparison to other mechanics. They keep altering the arena when you are being too idle, and often become an obstruction blocking shortcuts.
The more people ask for less turret hp the more I feel like I should increase it. There are 5 ways to instakill them, and if you really want to shoot them, you can multitask ie. by parrying other enemies.
I was considering pushing rockets by shooting them, but there are plenty of ways to deal with enemy projectiles already. At that point I would only make people even more confused.
Making a tutorial area and getting it just right will be essential to teach a less static way of playing.