First off, just because a smaller gripped Glock
feels better dry firing, does not mean it
shoots better. Make note of that in case you get Gen4s. If you get Gen3s, try a beavertail.
Do the
25 cent trigger job with a Dremel and toothpaste, metal polish, whatever.
Consider talking to your armorer about the SCD/Gadget. Tom will probably send him one for evaluation if he's curious.
Look the weapon into the holster and take your time reholstering (I understand that isn't always possible in police work but it should be usually). The usual caveats about no dangling drawstrings/physical impediments near the holster apply.