Coaching features, stats, computer + game analysis

1: ability to save and share pgns, favorite games, opening analysis on the site or on the cloud

2: ability to rate content [puzzles, articles, videos] for aesthetic/instructive value even if the results are only private.  so much content, so i do not begin to engage in chess content again that I already engaged in:

3: ability for users to create their own instructive content in terms of lessons in the chess mentor style or even a platform for users to more easily create chess media, even books.

4: improved use of personal stats page and computer analysis:  a computer coach feature that notes strengths and weaknesses based on user moves,

5: official casual chess leagues, groups, arenas, marathons, maybe with nominal prizes: to increase community engagement

some of the above exists in some capacity on this site and other sites, i know, but it could be better, is all.  thanks for your attention.

none of these could work