Still interested. I will read this and see if I can form an idea for a character concept. You shall hear from me again at the end of that process!
I tend to get as many people involved in collabs as I can
As for cliques, I don't think so.
I personally prefer collab posts to single posts since it's far faster to get through an event. I mean, single posts are fun and all, but they tend to take too much time to be efficient.
In the RP I'm running, a good 90% of all posts are collabs, and we would be at like 150 posts if they were all single.

Nobody's going to be mad if you are honest about your life taking priority. Quite the opposite.