Glad you liked it!
I have plans to eventually add the ability to pick up turrets for a small gold cost.
For needing to stand next to your gooshooters, I had specific ideas for how the player could discover interesting strategies where you could keep them loaded without needing to sit there idly, but I'm not sure if it's the most intuitive thing for the player to discover. I'm sure I can make improvements here.
Thanks for checking it out and thanks for the feedback!