When i first started out, only half my crew had guns and 3 of those were handguns. My guys in cargo and hall took a very long time to kill someone, and i would usually have some crew die.
This forced me to add more troopers to my crew and to add a gun card to my locker (would rather have more useful item in ship equipment tho.) These changes helped but took forever to move crew to interior, load them and get them on the front lines. This mostly resulted in crew dying again or my ship blowing up. After many attempts i was finally able to complete the evac in military.
Schoarn gave me some more cards and i started trying to complete the evac in science. Now i had guns for almost all, i was able to diversify my crew much better, even if they weren't great fighters. No more wasted ship equipment slot, no more wasted time going to locker, was working much better.
I've completed the evac a bunch of times now in science, with full cargo and passengers, and no deaths. And a pretty decent crew mixup that i would much prefer to be using for these later stages.
So for me i would say yes to having them in the beta packs. And i think new players just starting out would appreciate them also.