Love the plugin -- it's the first I've ever paid for.
I'm a little bit disappointed in the post-creation functionality, which is what I'm using it for -- I thought from the Features list on the site that it could do a bit more along those lines, which is why I jumped, because TDO Miniforms is a useability nightmare and doesn't give you nice CSS hooks without some major hacking.
Don't get me wrong -- I'm happy with the app, and it sounds like the features I want are coming soon.
My major request: arbitrary form element types (radio buttons, checkboxes, selects, whatever) that will write to a custom field on submit (in the same way that we now have a text field that does that). It doesn't seem like too much of a stretch, functionality wise.
I've managed to hack in image attachment using the Get The Image plugin, which works great in conjunction with GF, but am still scratching my head over other filetype attachments (in my case, document uploads as attachments on post creation by users). It'd be great to have a generic upload tool that saves the url of the uploaded file to a custom field (or whatever) as well.
The other thing I'd love would be select fields that are prepopulated from categories or tags (or...) That would make me very happy indeed.
Thanks again for the very elegant tool. I look forward to seeing new revs as they appear.