Regarding the combat changes:
Getting rid of the random shuffled deck is a good plan.
Please keep in mind for the new system to assign reasonable hotkeys to activate the actions, so either let us outfit hotbelts like in legacy or dedicate prior unused keys (F-keys are still free).
And please no intensity, combat is fast enough add it is - not everyone is a youngster and forcing a Coke/Speed habit on your elderly players so they can keep up would certainly cut into their available money supply and reduce your income from the shop.