DRAFT post, to memo things and (your) suggestions for next 1.8.1 version of phpBB WordPress integration:
1) avatar of phpBB users, aren't shown in WP until the phpBB user isn't added into WordPress (this will be added as fix if possible, even if the point 3 has not been implemented as wp_w3all installation setting).
2)
check the entire suggestion in this post:I found a problem with displaying Avatar in WP from phpBB. ...
... In connection with the above, I propose to solve the problem by changing the code of the plug-in, for
which it is necessary to modify the file class.wp.w3all-phpbb.php
viewtopic.php?f=2&t=622#p2557
this will be added with addition of a new "options" section into wp_w3all admin config page.
3) Add code to redirect the user to phpBB, when redirected by phpBB into WP (in specific condition): this is to add user in WP at same time, when registration is done in phpBB, and maybe the registration isn't done in iframe mode (where this concept, even if need to be improved, has been adopted/work already)
see this post that explain the concept:
viewtopic.php?f=2&t=625#p2559
4) Improve all iframe mode (page-forum.php) and related JS code (also overall_footer.html code).
... ... ...