Profile of Unit G17

G43 storms are about as good as the G43 panzergrens, they don't even have nuke nades. Instead one should use their booby traps often as the doctrine doesn't have any muni sinks.

Commandos and Stormtroopers are similar, but they still have their distinctive fields they shine in. Commandos are for general ambushing and can double as a strong frontline assault squad with brens. They are meant to face any kind of enemy squads at any ranges.
Storm on the other are only effective at close and are not always advised to be used against other cqc squads. BUT, using their tactical assault ability, they can wipe team weapons and rifle squads much faster than any other squads ever could (not counting grenades). Storms are also more cost efficient at disrupting supplies and destroying fortifications. While commandos have to place expensive demo charges for that purpose, the storms can use their lava nades and reusable schreck to do the job. The same schreck can come handy on the frontline too and don't forget their vehicle detection ability, which is perhaps best used at hunting enemy artillery vehicles behind the enemy lines. Even with only 3 mp40s the storms can fulfill their ambush role just fine. On the other hand, you don't see commandos with piats very often.

There is one issue to implement this. Buildable entities (which includes mines) have their own requirements, which are unrelated to the squad. It can only require global settings on player level, not on squad level.

I'm sad to hear that. But their audio cue clearly mentions mines ('panzerschreck und mines'), how did that work? What was the original implementation of the sturmpios like?
https://youtu.be/-hlvsLbCQmc?t=1066

Just why? Stormtroopers get their schreck for 60 muni, but they also have camo by default for suprise attacks and they get vehicle detection ability as well. Sturmpioneers get winter coats against blizzards, which hasn't been a factor in ranked matches for a long time (and I rarely ever see cold tech being enabled in custom games). It also locks out the sweepers.
A commonly suggested solution is allowing them to have both the schreck and the sweeper, but maybe there could be other solutions too, like granting them access to teller mines (their audio clue suggests that they get access to mines) to enhance the AT role.

To reduce the panicy nature of the ostheer puma, maybe instead of a call-in it should remain a buildable vehicle in T2 at CP5, but without the BP2 requirement.
Or take a step further and do something that no other doctrinal abilities do at the moment (if possible): the puma would be a side tech that can be unlocked in T2, similar to the british AEC. Basicly you spend some extra fuel to get access to pumas, but doing so delays the arrival of tanks for the ostheer player. This would bring some extra risk into picking and using pumas.