Yes, you're right. It's my fault for not pitching in. I should have worked my way in to the core team and fixed it myself, rather than selecting one of the other performant frameworks available.
> the stability and reliability of Ember's process
I'm aware you're one of the people who finally got it done, kudos. But the chances of going back to Ember are nonexistent. This was my experience with Ember:
* 08/2013: Unusable performance when displaying listviews with over 20 items, without infiscroll (unofficial and poorly supported, or roll-your own). Promises that it will be resolved in next months.
* 08/2014: Still getting the runaround about when those "improvements" will arrive.
Only one of a dozen things which made working with Ember horrific. Apologies for being bitter, but it is what it is.
I hope the stability and reliability of Ember's process, and its continuing improvement, will tempt you back.