The forum keeps blowing me away with amazing responses and after an evening of incredible feedback I decided to give the borderless look some more attention.
I thought some more of it and I’m still not an incredible fan of a borderless design. To me it feels a bit messy and more difficult to read than a border. Instead of reverting back to the original border I decided on keeping the above frame and adding a traditional black border (with a basalt stone texture which came as a suggestion from my girlfriend!)
Blow are what is (hopefully) the final design for the different cards =) The art for the action, reaction and upgrade are still just placeholder art (artist credited below)