I was a bit surprised by the poll results. I figured it would run about 75% with mods.
That said, my M&P9c is stock. I can't see the improvement being worth the investment as my trigger feels quite good for what I use it for (EDC/off duty). I shoot it well & have gotten compliments from "Glock Guys".
My duty gun (Glock) has a Vickers Tactical mag release. Only because I had to change my grip to release the stock button & it is not BIG like a competition style.
Only other pistol with mods is a 1911 style I built for IPSC years ago & even it is tame compared to a true race gun.