For the record, 5x elite carbines would have similar or worse dps in every category compared to 3x M1 Garand and 2x BAR. They'd be significantly worse at long range. They'd only have better moving DPS at close to mid range.
Probably should have clarified my idea
I was envisioning the m1 carbine upgrade converting them to a similar role as panzergrenadiers. They would be way worse than BARs at long range, but way better at mid range and a little bit better at close range, and would loose their snare.