>>> - Not backward compatible
> 
> because, unfortunately, it is a main obstacle for moving forward.
> Or maybe not? Maybe we should start making amazing stuff right now?

I am doing amazing stuff with Squeak right now. I have been doing so for 
years.

Now that Pharo provides the non-backward compatible way, which is fine, 
I don't understand why the question arises for Squeak once again. Pharo 
is the solution, isn't it ? (and I mean it).

Stef