Wasn't sure where or how to best contact you.
Really loving OptionTree - busy rolling it our across all my WordPress sites.
Your plugin uses a function that i think might make another great plugin - In OptionTree where you select an option type, you can select "Custom Posts" which produces a list of checkboxes of a custom post type (cpt) that you specify.
How difficult would it be to use that for another plugin - being able to tick off posts of a (defined) cpt - that would create an easy way to link / create relationships between custom post types (on a per-post basis) - eg selecting which tours (cpt) visit a specific destination (cpt), or which stores (cpt) stock a certain product (cpt).
I have searched /tried all the cpt relationship plugins available and NONE makes it as simple as your OptionTree. It would just need to be in a metabox on each post/page/cpt edit page.
If i knew enough i would play around with it, but I would be willing to help out if I can.