Performance mods, and upgrades, (in any engine, powerplant, or machinery, generally), are the "engine" (yeah, the pun), of efficiency; which, unless we're racing or competing for profit, should be what is sought after, shouldn't it? Cost effectiveness, long term enjoyment, a worthwhile and learned hobby?
I've done the basic upgrades, but have retained the points ignition, as I have 2 spare sets anyway. I never punch the idiot button, and it always starts on the 1st or 2nd kick.
I will, in the future, upgrade to a little bigger carb; there is a brit bike outfit now putting out side draft Mikunis, verrry nice.