Sure, that could be a good starting point for posts and topics:
FA solid icons and default colors could be improved for more contrast and less space. Icons are using a lot of space without too much functionality (maybe share could be moved right on top at every post in order to give more space?).
Then we have this on mobile:
And full-width could be more used and friendly than a floating rectangle (looks different to every single app nowdays and kinda weird
).
In profile we have this:
And could be better imitate some of this (I understand that vertical navbar should be mandatory but simplify options and stop using the same icon three times could be a good starting point):
