Second I would argue squad size of base infantry, if a grenadier squad picks up an mg42, you're left with 1 model on your grens; if a script squad picks up a mg he can continue fighting with 3 models left and neither squad has to retreat. If a grenadier squad loses 1 model he takes a 25% decrease in dmg output - scripts take a 17% decrease dmg output. Scripts allow you to recrew a beat down maxim without retreating or the use of a halftrack; allowing you to continue fighting without investing in a mobile reinforcement unit.
Thats why Ost gets the earlier Half track. Imo its one of the most needed units Ostheer has and is a fundamental unit to the faction, especially on larger maps. I understand the frustration of recrewing weapons as Ostheer all too well. I would like to see an option to recrew weapons with the desired amount of men so that all 3 man squads can recrew weapons.