This diorama now includes separate STLs for the floor and door. It is designed to work with a Big Daddy and Little Sister from CGTrader printed at 500%. The base incorporates Creaton13's Bioshock nameplate and a scaled down Splicer mask from Audrey2. Thanks!
Both models are designed to be printed on a CR-10 or other large format printer, but it should scale down as needed. I have printed both successfully without supports with 0.1mm layer height for the base and 0.2mm layers for the door. Both should be printed at around 20% infill. For some reason, part of the door sits off the bed. I recommend dropping that model a few tenths of a mm down to avoid supports.
Feedback appreciated, but I consider this done for my purposes. I hope they're helpful if you're working on a Bioshock diorama!