I thought it was really fun! I kinda wish I could just reload at anytime, and I agree that the reload currently takes you out of the game a bit. Maybe a hotbar so you can select whichever dice you want to use that u currently have, or something that can cycle through them (along with some UI showing what's currently equipped), and then allowing you to re-roll the die whenever I think would be great. The time it takes to roll the die can be the downside of just rolling till u get the gun you like, and with the uses on the special die it also wastes your roll if you just try to keep changing your weapon.