Long time lurker who posted more frequently on HF and Shag due to fewer family/professional responsibilities. I love the hell out of this site and find myself frequenting it more of late - mostly because I have had more time.
I am an old - but not ancient. Mid 40s. My .02 are in line with many of the others who have posted already about impediments to posting, generally, and original content, specifically.
Olds use computers. Utes don't. Ute content generation has to be done by phone and typically is limited to videos. At least my two utes.....
I don't envision a scenario where my two utes generate anything that would warrant posting on this site. Not that you have asked them to to do that but my oldest is a rabid horn and simply doesn't find sites worth his time. Everything he does on the internet is content consumption (videos). When he needs to learn stuff - youtube videos. When he needs to digest stuff - reels/tik-tok for his topic of choice.
I don't see that generation changing anytime soon.
My perception of the other pieces - meta threads are overwhelming. I "know" the vast majority of the posters on this site so I have a comfort level clicking into an old thread near the end and figuring out the current state of affairs. I don't think that new people would feel like they can catch up when the threads are a gagillion pages long.
I think there are too many sub forums. I find myself forgetting to check certain subs for MONTHS. When i do, i see the several threads i love and then endeavor to catch up. A daily digest, to me, may be great. Particularly for recruiting. I like the idea of the posts that receive X amount of rep being called out in some way.
Tangentially related to the OP - I recently started contributing to TOF. I have been three-fiddy for. a bit. I value what you all do and provide and I am happy to contribute a bit more if it helps relieve pressure. Once kid's college tuition is off my back, I am happy to contribute considerably more.