It seems whenever longevity of a season is discussed, trade gold (TG) issue gets a lot of attention. From a time perspective, I remember when many sessions ago I would spend more time on Discord trade channel than actually playing the game. However, I feel I played further into the season as had more time for it.
I started playing HC several patches ago to escape the TG hassle and mindless corpse runs. What I love is you can just share items with people, and people would share items with you, like one big family helping each other (at lease a few seasons ago). Even though the trade gold is out of the equation, Ubers and challenges take a lot more time than SC, same goes for farming, I play less into the season simply due to other responsibilities.
Hopefully this is something to keep in mind when discussing no TG for previous seasons for the first weeks of the new one, or things like drop nerfs, harder bosses, more end game content, non transferable charms, etc. From my perspective, I would play even less if the drops were further nerfed due to available time to invest versus rewards.