I'm against any lightening of OEM striker springs, until
someone finds a stocker that's ridiculously overstrength.

Compared to hammer/firing pin systems, I think striker
systems start off with a much lower margin of adequacy,
for providing adequate primer impact. Start thinning that
margin down--say, by putting in a weaker striker spring
--your getting closer to "failure to ignite" territory.

Strikers seem fairly 'sealed' against junk intrusion, but
junk can get in. I've found gobs of primer shavings,
cut off by sharp edges of the striker's hole in breech face.
Sometimes they collect around the backside of that hole,
cushioning the striker's forward excursion. Sometimes
they migrate from striker bore into the safety plunger
bore, and build up a cushion that resists the full
depression of the plunger--which then drags on the
striker's forward movement, instead of getting out
of it's way--and reduces the striker's impact energy.

I've seen stock pistol's move into misfire territory,
with the OEM spring set. With a lighter striker spring,
the malfunctions would have started earlier--less
reserve energy to overcome system losses.

If a lighter trigger pull is mandatory, periodic clean
out of the striker & striker safety plunger bores should
be a habit.