Consider: Self-hosted parameters #324
Description
JAM has a lot of parameters; in principle these could be encoded in (genesis) state and evaluated on a block-by-block basis.
Certain parameters may need care to ensure sensible operation when changed. It probably makes sense to have validator set size follow only from the set itself (which can be allowed to be variable) and not use any explicit parameter.
Altering the number of cores could also be troublesome.
The added complexity should be weighed against the advantages of easy parameter alteration.