The Half Life 2 Mod "Dark Interval" has a fix for the when a Barnacle grabs an NPC you can save them before being eaten. Not only this but the NPC will get up and thank you for saving them rather than ragdoll and dead.

I wonder if this could be ported over?

It does not appear to have an animation yet for being lifted added for the npc or none was triggered in the video clip I saw which would be the proper thing that should happen,

Raising the Bar Redux also contains Working Classic Retinal Scanners Model and all other assets pertaining to screens lights so on. Not sure if they could be ported over with permission.

Not sure why people just don't make an entirely Half Life Nostalgia classic version of Black Mesa with the original Xen incorporated?