I moved my application off of Rails early in 2009 because I didn't need or want all of the features in that framework (ORM, MVC etc) and didn't like the large footprint we were generating (200Mb). Merb-core has been a great home for our application but I'm now wondering if we should move elsewhere now that Merb & Rails have merged.

Does anyone have advice on the following questions?

* Should we stay on Merb?
* Given the desire for a minimal
footprint, is there any point trying
to reimplement the app on Rails 3.x?
* I have some experience with thin and
Rack but use enough Merb features
that the port wouldn't be painless -
is it worth going 'down' to bare
Rack?

Thanks, I appreciate that some of these are subjective but I hope that there are enough people who have used Merb and who have faced the same questions.

Just as an aside, the last question here about Merb was almost four months ago.