I've got to address the front sight haze myself w/o glasses. I made the dumb mistake of wasting $$ on single vision glasses thinking I could use them for shooting. Well I can - for shotgun! Pistol sights are just an un-recognizable blob.
Come to think of it, I haven't parked my eyes behind a scope with the new glasses. Have to find out how that is going to work.
GSSF allows ANY factory Glock part. You can put in a smooth faced trigger, polish the rubby parts, add a "-" connector...all are still factory parts. If you want to try a different trigger for free, I have some factory ones laying around gathering dust since I switch all mine out to smooth faced.
"Trigger freeze" is something I absolutely would not tolerate even in a 'range only' gun.
On Edit: Sorry I wasn't more clear in suggesting another trigger. What I *should* have said is "have you tried another Glock trigger", not an aftermarket.
They can change feel with different guts in them, even if those guts come from the same plant. Might be tolerance stack, different machine or mold, some come with a trigger fairy -> others get a troll.