The current principle for WoT Blitz we try to adhere is focusing primarily on battle aspects of the game, at the same time trying to streamline and simplify the garage management part as a whole. This includes having cleaner interface for main garage screen, overhauling crews as concept, changing the way consumables/shells/equipment is handled.

What things from your perspective should be considered? Any changes to progression? Currency balance for WOT? What would be the things you would be willing to spend money for in general in such a mobile game? Like having limited fuel or energy that replenishes with either time or money? :)
What could significantly change the steep learning curve of WoT (there is such on PC, recollect your first battles) on mobile while preserving certain challenge which is absolutely necessary for any game?

Feel free to post most radical things.