Wolfie

Look at this screenshot, specifically at the breadcrumbs...  Home > Clubs > (club name) > Topics.  If it allowed multiple forums (or categories), where is that link at?  Why wouldn't it be 'forums', then the forum name, with "Topics" at the end?
If I were to make a bet on anything (which I'm not, I've learned not to do that when it comes to the IPS crew), it'd be that the forums integration enables one 'forum', where all topics are placed.  I believe allowing multiple (but not nesting) forums would be a great inclusion, but I'm doubtful that it's the case.
 
 
Edit:
Just took another look and it does allow multiple (as mentioned in the blog entry).  I think that implementation is rather smart, as it keeps it all as one menu, vs app/area > section > content, which can get a bit bloated.
 

See all the trouble you caused!  
Well, you already quoted the answer to your inquiry, so I guess you're happy now.

Ok. with the introduction of Clubs is time to come back to IPS. Renewing...

Of all the recent updates posted (as well as ones over the past couple of years, with me doing other things), this is the one that has me logging in to say YAY!
 
Could something simple be added, like a comment box that the user could fill out (optionally) when requesting to join a group?  Nothing fancy, just have some text with it that mentions some clubs may require it to be filled out when requesting membership.

Also, any option for preventing a user from constantly requesting to join a club when they keep getting denied, like maybe a 'cool down' period?

Of all the recent updates posted (as well as ones over the past couple of years, with me doing other things), this is the one that has me logging in to say YAY!
 
Could something simple be added, like a comment box that the user could fill out (optionally) when requesting to join a group?  Nothing fancy, just have some text with it that mentions some clubs may require it to be filled out when requesting membership.

Also, any option for preventing a user from constantly requesting to join a club when they keep getting denied, like maybe a 'cool down' period?

As an idea for a future implementation, have three options...  Approve (of course), deny (must be invited), deny (may re-apply).  That would be the best of both options, where a user could be denied but told why/what they need to be able to get approved, so the user could try again, but also prevent abuse by stopping someone from constantly requesting to join.