I like where it's heading, however right now it's seems like a
slightly enhanced scaffolding (I didn't dig too deep, so pardon me if
I missed something). I specially like being able to define custom
options for each model.
What I'd really like though (and I assume this is the goal with
toffee) is a more full blown admin, with some real authentication, an
index page with some stats from toffee enabled models, an WYSIWYG
editor for text fields and stuff like that. I'd really consider using
it for simpler projects if it had all that, else I don't see how it
can be very useful. I also like the search function, which is
something that scaffolding doesn't give you.
Anyway, just my $0.02, good luck with your plugin!