Corinnguard
Hero
It's hard to say if A5e's way of dealing with mixed heritages could lead to min-maxing. Plus heritage isn't the only thing being considered when designing the origins for your character. There's Culture, Background and Destiny too.one flaw with that it will be used to min-maxing beyond the levels even the godhead intended.
I do believe, however, that some heritage/heritage gift combos are better than others.