I believe that after this patch, the forcefield needs some adjustments.
First the amount of shifts it will stay, I believe that 3 to 4 is already good (taking in consideration that it breaks in 2 shifts), and it would also be very interesting if you could choose each tile that forcefield will stay, for example 1x9, 3x3, 2x4.
I think it would be wrathful, you could change some components of the weapons when you want, like put aim, or change the exit of the barrel, when you want would be very interesting, but of course with a limit not to be broken.