this thread is not about my skill or about any strategies involving spamming of engineer type of units.
This thread is about having 2 distinguished roles for engineer type units:
battle oriented with limited utility
utility oriented with less fighting power
I would be happy to debate this proposal but the other issued razed so far seem to me out of topic...
I don't see how this is a distinction that needs to be made.
Sov and Ost engineers already have extremely limited fighting power and already can't upgrade both flamethrower and hazard removal package. If you make flamethrower nerf their other building utilities then you're forcing these factions to waste MP on multiple Engineer units just for the sake of artificial specialization.
REs had their cost efficiency heavily nerfed last past with their 5th man vet changed and their reinforced changed to (lol) 25 (barely cheaper than Rifles). This makes RE spam highly unfavorable.
SPs - Probably the unit that best reflects your argument but they are also much more expensive than other engineer units and that is reflected with their performance. The fact that they are so expensive further emphasizes the reason why you can't force a player to build several just to have a "combat SP" and "repairing SPs".
Sappers - Now require significant munitions + Anvil investment to be truly combat effective.
Even if you take into account their Vet bonuses they will never ever replace mainline infantry (nor do most players ever build more than 3 barring certain circumstances). Again, if you nerf Engineers you are just limiting the tactical options that they provide as a support unit.