well there you have the soviets which rely on zis gun barrages, muni stock for 7 men lategame mass upgrate ,mines, flamer. I do agree though that the force retreat shoudnt buff the units around the retreating sqad though. That seems a little exessive when you keep in mind that it costs 50-60 ammo
7 men upgrade is a middle to late game expense. Can't be compared to earlier game upgrades like G43s, STGs etc. Zis gun barrage is optional, nothing you need to use to have a chance. Meanwhile the G43 upgrade is absolutely mandatory or your Füssiliers have no chance of trading decently vs any mainline infantry. Mines are needed for all factions. Soviets don't need muni for healing either.
I just think the doctrine is severely limited by the muni-hungry Füssiliers + muni-hungry Officer. You can't use either to their full potential.
The biggest issue however is that you can't go Mech if you go with this doctrine because then you will not have any muni at all because of the medkits you need to rely on. So you are forced into T1 builds which are generally weaker and even then you lack muni to really use your units.