I can really empathize with the sentiment. After all, who wouldn't want to be super-powerful now and then? But considering what extremes the Pathfinder games had to go to to make things somewhat interesting for their level 16-20 parties, I don't think that's necessarily a good idea for just one game. I'd rather have an expansion or a sequel, eventually, made for that power level.
Also considering the old games, TOB wasn't actually very interesting, especially towards the end. Just like the last chapters of the Pathfinder games, an endless slog of fighting ever more powerful enemies with excessively inflated traits, and very little actual roleplaying. Easily my least favorite parts of these games. I finished SOA with about 10 characters. Only two of them reached the end of TOB. Because I got tired of the endless fighting at some point and just stopped playing.
