Aside from the MG 42 not being the right way to balance Grenadiers, you severely misrepresent the BAR. A Rifleman Squad with a single BAR will beat Grens with an MG 42 at any but the longest ranges - no, the MG 42 does not magically outperform the BAR at medium range, not when the BAR deals two times the damage at close range (as it currently does). Then there's of course the Bren, which simply can't perform on the same level as the MG 42, as it comes on a potential 5 man squad that already massively outperforms almost any other infantry unit (when sitting in cover). Giving Infantry Sections even more firepower by buffing the Bren would be more than just stupidity.
As I said, the MG 42 is not the way to balance Grenadiers. Ostheer already demands way too much ammunition investment to stay on the same level (not even to outperform, just to be equal) as other factions. Emphasising that even more would corner Ostheer even more - just as beating up the fat, ugly kid in school isn't very heroic.
The balance approach should rather come from either adjusting the other infantry units, or by re-evaluating veterancy bonuses. Sadly the Winter Balance Preview focusses most of its energy on relatively sideline topics, instead of finally tackling the major infantry problems, so we will most likely not see anything happen here anytime soon. Sure, there are some adjustments of veterancy bonuses, but what has been shown so far are negligible changes at best.
Nice analysis, but i fail to see where you saw i was talking of ranger ? We are talking of grens, LMG, and Bars, i was comparing Gren with bars ( obviously picked up ) and grens with LMG42