Thanks guys, for the feedback.
As far as model quality goes, yeah, my intention is to keep a single quality standard throughout. On the UE4 side, yes, again my intention there is to do a setup with customization in mind. The whole idea here almost like providing templates that you can then use and make your own by either simple custom properties in the material, or full texture edits.
With regards to scaling, correct me if I’m wrong but I’d scale them according to “Blueman”. So there will be a scale standard and of course it’s easy to do some scale changes if required, just in the editor.