For this, the project templates are ideal. You can find more info about them in Jean's wiki.
Thank you! This greatly simplifies setting up projects. It works except for termbases imported in the project: is there a way to keep them too?
You are referring to the termbases embedded in SDLPPX projects?
No, I'm referring to sdltb files, which I import through
Mermory -> Import -> Import SDLTB termbase...
Once you import the SDLTB:
Memory > Save memory as, and save the SDLTB as a TMX. You can then add the TMX to the Dashboard (make sure it is Read only, if needed).
Memories can be saved in templates.