Suggestion!

[magnett]

First of all, your control is really cool!
What i would like to see as a feature is the ability to select a row without opening it's view so that the user would have the option to either see "more" or tap and go to the next screen.

[tgyhlsb]

You can now call extendCellAtIndexPath: to extend the cell you want when you want.
In my example I call it in my tableViewDidSelectRowAtIndexPath:

Your suggestion made me realize my ExtensiveCellDelegate thing was a huge mess. I Fixed this too.
There is no longer ExtensiveCell class, just subclass UITableViewCell instead.

I hope this will help you do what you want.
Thanks a lot for feedback !