There are limits to how "good" (a subjective term) a single lever trigger can be made without being made dangerous. There are good reasons for selecting an aftermarket trigger.
Personally smooth, consistent takeup without too much of it is a prime requirement. Let off weight isn't, so long as it's the same every time and it's not so heavy that it makes my finger hurt. That's within the capability of any decent trigger. Still my favorite deer rifle sports a Timney just because. Every year I have to get used to the light trigger that acts like a set trigger when my fingers get cold.
Safety is a big reason for me wanting to go aftermarket. The trigger that's in it, has zero take up. It is against the "wall", it's just a heavy break.
I've heard of people using the rifle Basix sear, but I believe that is for the older Tang safety models.
