UserPoints and OG integration

Hi,

I need the following capabilities on my site and just want to know if they already exist before I dive in to module development.

1. Being able to associate a UserPoints category with an Organic Group - Right now, I can do this with Rules and content types, kind of. I basically need to make sure a content type is only able to be posted in a specific group, but once done that, Rules works.

2. Being able to set a max number of user points an individual can earn in a group - I was able to set something like this up using Rules, but I'm not sure I'm capturing every possible point a user might be assigned points.

3. Bonus points for a certain number of comments - For example, if a user gets 10 comments on their post, they get a bonus 10 points. Again, this can be done with Rules and possibly some PHP (I don't have how I did it on hand), but a simple module would be easier.

4. Limit users to one node of a certain content type - I also implemented this with Rules, but it seems buggy. Also, this seems to be requested often and always to limit to 1 node of a content type per user. I'm thinking UI wise to just add a check box to the Content Type Creation form for "Limit to one per user" and then if a user tries to create another, they are given a warning message and given a link to their existing copy of that content type.

Thoughts?

James