This idea came to me suddenly, and I didn’t find anything similar (immediately) when searching forum. There is an observation that people often ignore the stimms found on the map, wait a long for the “best moment” of use, or keep only the healing one. What if, in addition to the short-term buff, using stimm would also provide a small permanent effect throughout the mission? +1% damage from red, +1% speed from blue, -1% cooldown time from yellow, +5 health to life bar from green. Then they would be valued much more than now, without providing excessive advantage, but encouraging search and use even outside of combat.
Moreover, HS with a crate, but without the custom cartel stimm, would be especially advantageous from a supporter’s perspective, allowing to distribute stat boosts to the entire team from each vial. Right now, it’s only fun playing this choice as a “doctor” in a gas missions (plenty of healing stimms), while in all other cases it seems pointless.