As an extension to my last post:

One realization I made doing this exercise is that I am able to open button 50%, and call 3bets 28% of the time (corresponding to 14% total range), and call down 60% of my range on each street such that my river calling range is actually VERY strong. Stronger than I would have imagined in some instances.

For example, on quite a few run outs I took my final river calling ranges vs diff hero hands (over pairs, TPTK etc) and my range would often have somewhere between 33-45% on river. Compared to needing at most 33% facing a river pot shove, and realistically needing about 30%. Also depending on your preflop calling ranges and how you setup your postflop calling ranges, you can be pretty comfortable call down on most types of boards and most run outs.