OK, I have to admit I've never had a plastic mainspring housing fail.
Of course, they come off pretty soon after the gun gets home, so that may be part of it!
But, I honestly have not seen anyone else's fail either.
Forward slide serrations.
I see their intended purpose (I see their ugliness, also-ha!). I can see Mr. Speir's case. I can understand the snake eaters and their ilk who wear gloves most of the time, since gloves complicate, well, everything.
I still don't like them. Maybe I connect their appearance with FLGR's? Maybe if there never were FLGRs, the serrations would not have appeared.
I usually prefer Commander size 1911s. I suppose as soon as I got use to using the forward serrations on a 5" gun, I'd pick up a Commander, go for the serrations, and stick my fingers in the muzzle.
There it is! There's my argument! If all else fails- make it a safety issue.
Get your ammo, arrows, spears, whatever, and prepare the attack-
I'm a Browning HighPower nut. So, of course, I think all pistols need the forward slide cuts of the BHP, or nothing at all!