You work in cybersecurity and want more exposure between the host and the guest? You have a very different risk tolerance than I would in your shoes

If I'm doing real malware execution and analysis, I would one- way transfer the relevant file(s) to my sandbox and disable any backward connectivity before execution, but I still need a reasonably simple way of getting files to (suspicious files, etc) and from (resulting logs, registry changes, pcap, etc) the malware sandbox. Ive kinda solved this already using a number of tools outside my work host, but just in the off situations where this is necessary I want to have a template VM prepped in advance.

I second this, it's called magic wormhole, if you want the source, croc is a more friendly solution built ontop of magic wormhole. In any event, quick and easy.

PSA: wormhole.app and magic wormhole are not the same

If you want to use the well known magic wormhole then visit the repo for instructions: https://github.com/magic-wormhole/magic-wormhole

The current supported version is a python cli app. A rust version is being developed, but last I checked was not considered ready.

> I'd like the ability to drop files to a VM from another VM, like shared folders in Workstation.

https://www.qubes-os.org/doc/how-to-copy-and-move-files/