I did see one of these youtube stories on this late this afternoon. The narrator (can't remember when comic book site it was ) did point out that at this point, there could be a lot of "spitballing" going on while working on the scripts. Ideas getting tossed around, etc. Isn't BP 2 scheduled for 2022? They should be getting close to a final script.
If Doom does appear in BP2, I think I would rather see Doom introduced only as someone pulling the strings in the background and not entering the fray personally.