They look awkward with 2 STGs and 2 Kar98ks. Pls give them 2 more STGs (maybe normal, not scoped) to help them compete against Rangers and Shock Troops at medium-close range.
Sturmpioneers are decent now but I wouldn't risk loosing my expensive repair squad for dangerous frontline duties.
That would be a straight buff to the ability that is probably not needed, especially not because it 'looks awkward'. They almost completely negate cover and do decent damage. They're not in the role of super beefy assault units like Shocks and Rangers, so why should they beat them in that role?