Homebrew Background: Ability Scores, How?

My issue with this solution is that, if I rely on it, I need to make two different versions of my homebrew species—one for homebrew origins and one for standard origins. Otherwise, I can end up getting either double ability score bonuses or none.

Quote from amlugnil >>

My issue with this solution is that, if I rely on it, I need to make two different versions of my homebrew species—one for homebrew origins and one for standard origins. Otherwise, I can end up getting either double ability score bonuses or none.

 a) The system will apply a 5.5e background first and not give species ASI.  It won't give you double bonuses.

b) You need to make a 5e species and/or a 5.5e species.  You shouldn't be making a homebrew 5e species for 5.5e, or a 5.5e homebrew species for 5e.  They're different systems.