Why not more upgrades? they seem to kill/wipe anything sort of living with 2xbrens and that vickers_k from going heavy engineers?
And do they even need sweepers anymore when the OKW mines are changed to not dangerous after the patch.
1) Because the moment you sink 190 munitions on a unit, it suddenly becomes precious. Heavy sappers are all about Zen, attrition and prolonging fights. It's not about you worrying.
2) The unit has low survivability vs indirect fire
- it moves slower than anything else in the game when it gets hit
- it suffers from the same squad formation clumpability issues that plague axis infantry
You don't want to sink 190 munitions in a unit like that.
3) They get absolutely 0 offensive vet bonuses, as a squad.
Even with 3 LMGs, heavy sappers deal less damage than double LMG tommies deal. Thus, it's better to save your munitions for Tommies. (or, better yet, for some off-maps)
4) You can't choose the engagement distances. Thus it's better to be prepared for all cases.
The unit is extremely-low DPS. Thus, no matter how many LMGs you have, the enemy WILL close the distance to you. Since LMGs are actually a down-grade for close-range, you just minimized your chances of survival.
5) Because heavy sappers Just Work with that vickers_k.
Trust me!
Now, regarding minesweepers. As long as Brits have tanks, and OST has s-mines and tellers, there will always be a need for a minesweeper.