The ability was OP and had to be fixed, but it see little now.
It is not that the time is very long, but one can start only after the sector is friendly and it usally there are more important thing to do.
I think it is about the number of times you have to come back to the unit at the moment.
1. Take the territory point
2. order the flare
3. send them where they are needed
#2 and #3 can be chained, but it is slightly clunky to use, especially if you're not in the top100 micro players. It is very powerful though, if it gets untied from territory points it has to come with a cost.
OKW already has good recon in this commander with JLI, I am not sure how much more visibility it already needs if flares or any replacement ability become more accessible.
If I am not mistaken Soviet sniper flare are different from most flares including the PF ones.
How are they different? Especially on a functional level, not secondary stats like the duration or CD? The mechanic looks identical to me.
Anyway: Do you mean they should get a flare mechanic like that?
And by trucks I assume you mean OKW HQ trucks, not the half tracks?