that was a nice conversation to follow!
Personally what I have a problem with is the increase from 80 to 100'000 bytes, as the rationale for this was "we will have to increase it anyway probably in the future, so let's just be done with it now". This doesn't seem like a prudent approach to me.
I think limiting OP-return to 10k (or something like that) would put this whole debate to sleep at this point