I would like to make a code challenge (or a new type of challenge), which is based on code size, but in a "dual" way to code-golf: code size is limited, and the winner is whoever makes the best code (with some objective definition of "best").
Something like this challenge (which was awesome) but with an objective winning criterion and without language restrictions.
To allow verbose languages like Java, I would like to make the codesize limit large enough (400 bytes?). However, with this code size, code in languages like Golfscript would have a vast advantage. This is not bad by itself, but I think Golfscript code larger than 100 bytes cannot be awesome because it's too complex.
Therefore, I am asking this question, which attempts to set reasonable codesize limits for different languages. How can we make such a list (for all possible programming languages)? How big can it be? Is it a good idea at all?
(I am thinking about taking the 20 highest-voted codegolf questions with answers in many languages, and somehow averaging the best codegolf scores for each language)