To simply state that it will break one's code is perhaps not enough when a growing frustration in the community shows up. We should definitively understand better what kind of need in terms of compatibility our community has.
at times I wonder what kind of community this is. it definitely doesn't feel like a community to me: I have been contribution packages and original work for years that have mostly been unnoticed by 99% of the "community". and when I speak up like I do today I feel like an alien.
the sociological structure of the Squeak community is maybe a key point worth studying, that would help defining Squeak's goals and means. we have researchers, educators, individuals, businesses and a large part of silent people (as everywhere, but for Squeak specifically maybe it's no so good to be silent)
my 2 cents.
Stef