Depending on pricing this could/would be quite useful. Would hesitate to implement it though until I knew long term pricing plans as I would hate to have to install it, then remove it if it was too expensive to be worth it.
Definitely needs to support more frameworks though - Rails would be an obvious one (from my heavily biased ruby point of view =)
We will definitely aim to support Rails in the near future. That's on our to-do list for the next major release.
In terms of plans and pricing what you see are our indicative plans. We are still in beta so our current plan is free.
Depending on feedback we might tweak the pricing a bit (we do want our users to receive great value for money) but my expectation is that we will stay close to the plans we have right now.
Definitely needs to support more frameworks though - Rails would be an obvious one (from my heavily biased ruby point of view =)