To be frank about function; the sub-compact 1911's can have issues. When they are tuned, then they work. Period. But they often need some tuning, and can be ammo sensitive.
As for all the rest, lumped into one big pile: If I were looking for a feature that would make the pistol LESS likely to ever have an issue? Hammer beats striker every time. Smaller pistols, in general get some smaller parts to work with. There have been, and continue to be some pistols which have a striker fire system that hits on the light side.
There have been, and always will be, ammunition that has harder primers than others. THIS is the primary issue for reliability.
If I were choosing a defense pistol, I would rather opt for a hammer fired unit over a striker fire.
I carry the LC9, and it's a decent pistol. I am not enamored with the trigger. If the trigger were better, it would rank as a fantastic pistol.
Most sub-compact SA pistols have rather rough triggers on them with long pulls to reduce accidental discharge when pulling them from a concealed location- ie pocket.
In general, ALL these sub compact pistols need 300-500 rounds thru them to work the triggers in.