Open source mechanics (SR4R/SR5), A list of what we want Options

[El Ojitos]

In the SR4 forum a few people came up with the idea to develop open source rule mechanics for use with SR.
I wonder if we could find agreement on what we would want from an ideal SR ruleset. So I've collected a few ideas.

New rules should deliver dice mechanics that reflect
- a well balanced influence of talent (attribute) and learning/training (skill) on the probability of sucess (unlike in SR4)
- diminishing returns for higher ability (unlike in SR4)
- possibility of sheer dumb luck successes
- higher ability must mean better chances in every situation (unlike in SR3)
- a possibility for char developement
- a realistic limit to char developement (unlike in SR3)

Further wishes:
- same base mechanics schuld be applicable in pretty much all contexts and situations
- general SR feel should remain. i.e. rolling numerous d6s.
- roughly equal benefits achievable through magic or technological augmentation at roughly equal costs - at least in key areas like athletics, combat and initiative
- flexibility for use with different playing styles

I'm sure there's much to be added to this list. Please do so!