[@gautam2011 Member 15 years, 5 months ago]

a. Private message

b. Avatar upload

c. Memberlist

d. Quote option in topics

e. Smilies

I prefer them to be as plugins, not integrated within bbPress. If we need to update some part of code of those features, we could just update the plugin not the full forum board. The plugins can also be managed by individuals, not by the creators of bbPress.

You rarely have to do any template edits to use the plugins, all possible of add_action and add_filter