So many people have contributed to CHDK that it is impossible to fairly decide each person's contribution.
Is a large amount of easy but tedious code worth more than a few lines of code that took a lot of time to develop ?
Most people who made great contributions in the past are no longer active in the forum.
How about rewarding the 'inventor' of CHDK, our Ukrainian friend 'VitalyB' ?
No-one knows who he is !
Maybe Andrei Gratchev (GrAnd) .. he built upon VitalyB's pioneering work and basically created the 'firm foundation' of the development kit ?
I study GrAnd's code (and that of others) simply as an enjoyable and useful way to learn 'C' programming.
Do not worry about it, just be grateful