I dunno, this all seems too complicated. Linear progression makes sense to me but once we get into RPE and a bunch of different loading calculations it just feels like mental mathturbation.
Also, Mark's statement that all outside activities can interfere with recovery rings true. From a chemistry perspective or bodies are the limiting reagent of the reaction.
Texas Method appeals to me because linear progression is still occurring its just the slope changes. I think all the resets are mostly convenient ways to keep your enthusiasm up and deal with the normal bumps in the road hat accumulate over time.
I always picture the overall adaptation curve as logarithmic, the slope and maximum are primarily subject to age and genetics.