Some bugs/glitches I can confirm, but not necessarily explain.
1. Saints refuse to shoot
Other people have reported it and I have encountered it myself a couple of times. This appears to be the same bug that prevents proper homies to shoot in vanilla sr3. Since a lot of the replacements reference the same character definitions, this may be the case here. It may be possible to fix if this is a behaviour issue.
2. Stuff with specialists
Though I say I haven't had any real issues with it, there are some. Having the modded "definitions" in my folder caused grenadiers to spawn at 2 stars, and Morningstar's sniper copter had two regular mooks with SMGs instead of an actual sniper. Basically, if you're okay with enemy specialists behaving oddly and just want for them to be part of your gang and spawn inside cribs/on the streets - use the file, if you're not - don't (you can still get the character through the backup call).
1. Saints refuse to shoot
Other people have reported it and I have encountered it myself a couple of times. This appears to be the same bug that prevents proper homies to shoot in vanilla sr3. Since a lot of the replacements reference the same character definitions, this may be the case here. It may be possible to fix if this is a behaviour issue.
2. Stuff with specialists
Though I say I haven't had any real issues with it, there are some. Having the modded "definitions" in my folder caused grenadiers to spawn at 2 stars, and Morningstar's sniper copter had two regular mooks with SMGs instead of an actual sniper. Basically, if you're okay with enemy specialists behaving oddly and just want for them to be part of your gang and spawn inside cribs/on the streets - use the file, if you're not - don't (you can still get the character through the backup call).