Of all the things that 1911 needs, a FLGR is NOT one of them. IMHO I think a FLGR is needed only if running a comp on it.
The four basic things a COMBAT/CARRY .45 needs to make it more shooter friendly is...
1. Good set of sights.
2. Good elongated/speed trigger.
3. Beavertail grip safety
4. Commander style/slotted/skelotonized hammer.
Everything else is just cosmetic junk.
If it were mine, I would also install a flat MSH. Perhaps a decent thumb safety if the one on it currently was too skinny. But never an ambi...I hate ambis.
I totally agree with you on point number one but I don't think that 2,3,4 are necessary. Depending on the size of your hands and how you grip a 1911, beaver tails and long triggers may or may not feel better. For the guy that's new to a 1911 its hard to explain sometimes why you'd spend 2-3 times the purchase price of the gun having it gone over by a gunsmith that specializes in 1911s.