I think you should first try to quantify the oil consumption. How much goes in, how much you need to add, how much comes out.
For me (2016), the manual calls for 5.1qt but my oil light will definitely light up before my next oil change. So I usually add about 5.2qt and that works get me to the...
Not sure how true is this but I've heard if you floor the brake pedal, you can over extend a part in the brake booster and damage the diaphragm.
What exactly is the current issue that you are experiencing? Soft pedal?
2.5L gets up to 30 on highway and up to 28 combined. What did @CrazyHippie get before as a baseline? Claiming 29-30 after grounding isn't a step above the estimation. Unless that's your city mpg.
Refreshed my blown 2016 front struts with the revised 2019+. Found a new old stock and a low mileage assembly. Honestly I don't feel any difference at all but at least no more groaning during low speed.
Rear struts are next. :)