Yes I know they are working on solving the issues I've mentioned, but I don't think they are there yet? I wasn't aware of MPS, it looks like a very interesting garbage collector. Do you know if it supports inline bump allocation (no function calls)? I skimmed the docs but couldn't find the answer. The language I'm contributing to (Factor) does that by keeping the nursery pointer in a register so you just ADD to it to allocate memory.

To bad about the restrictive license. Is that why there is the Open Dylan exception in it?