Hi std_ren,
If you would like Basecamp as front-end for your OmniFocus to-dos, maybe Spootnik is something for you (
http://www.spootnik.net). It synchronizes Basecamp directly with OmniFocus.
It is currently in private beta. If you like to test-drive it you can sign up here
http://www.spootnik.net/signup.html and join the private beta crew.
Best regards,
Lars