Given that I'm not a member of the 501st yet, I'm not sure how much weight my opinion holds, but I like the idea of having an optional rifle as a part of the CRL and I'm definitely game for adding the DLT-19X and the DLT-20a. (Even if they aren't I'll probably still carry one anyhow )
I do think that, as BikerScout007 noted, it's a question of where we want to set the bar? I'm curious, how often do the other detachment CRLs add video game-only material? Is there any other insight as to how such additions have worked out in other instances, or when it's gone awry?