The only thing I really don't care for when it comes to Glock triggers is the trigger shoe itself. I'm just not a fan of the shape or the way the dingus digs in to my finger. I'd like to change either just the shoe or get a drop in replacement that uses an OEM trigger bar. I don't want to decrease the pull weight or pre/over travel. What are some good options you guys can recommend?
There are only a few that will not change some of the Glock characteristics, remove pre travel, etc. The Vickers Flat shoe is probably the most cost effective to try out, and it won't change any of the factory settings, pre travel, break pull weight etc. Most others will at at least remove some of the pre travel.
I would caution using any that have use adjustable pre and over travel. They will have a tendency to go out of adjustment during shooing, and that can cause issues.
My personal favorite is the VEX shoe by Ranger Proof or Johnny Glock. It isn't the least expensive, and will remove overtravel, but it will not disable any of the factory safeties, and does not have any adjustment capabilities. It also decreases the reach to the trigger quite a bit which is one of the reasons I choose it. That along with the fact it was tested and works perfectly with the GPT.
As others have mentioned, you can contour the factory trigger safety tab, but don't get aggressive with it, or you will remove too much material and cause the safety to develop a hitch or catch on the frame.
That's one of the strong suits of the Glock platform, there are tons of options out there. Whichever you decide, make sure it is from a reputable manufacturer. There are some out there that were just designed for looks rather than performance and function.
TXPO