Hey Alex,
Really, really love the feedback your giving. While we integrate with JomSocial and do some things better (especially for single-sign on and profile import), we realize there are other areas we could be more 'like them' as to what they do. Since we don't use JomSocial day-in and day-out, we don't always know exactly how user's have used their Facebook integration before (and what they miss about it when moving to JFBConnect).
I've added a tracker item to our to-do list to investigate a few points where we could auto-insert some code into their templates so that you don't have to do what you mentioned above. The {JFBCLogin} tag does give a ton of flexibility for these things, without having to wrap your head around complex code. Glad it helped here.
Thanks again for your post. We have a JomSocial integration guide (not easily findable, in my opinion, but that will be fixed too), that we'll likely add your workaround to for the time being.
Alex