That's not possible, there're more than forty (40) plugins in the official repository, it would drive me crazy to offer also support for non-official plugins. It's a lot of work.
What I could do, is to review them once (clean the code, review errors, make sure it works on latest version,...) and publish them on the market. I will need some support for original authors and some compromise to update their plugins once they're on the market. If they're no way compatible with latest version or need a lot of work I will probably not update them.
I will create a new post asking for third party plugins, but last one didn't get much support/replies =/
If you know some third party plugins, please tell me so I will contact with their authors and tell them.
Thanks