Everything I have read about engine management suggests that any improvement on the present mags will be really minimal and probably well below 5% on SFC - once you are peak-EGT or LOP.
Electronic ignition would be nice because in theory it could last "for ever". But these old companies are not IMHO capable of designing a piece of electronics that lasts. They can only just barely make a crankshaft that's had the right heat treatment, without any of the steps having been skipped
