To be fair to DVD-A multi angle is not considered a basic feature in authoring apps. More expensive stand alone authoring programs such as ReelDVD don't support this either. If you want to pay top dollar (25k) then you will find authoring programs that offer this feature (upto to 9 video tracks).
Pinnacle Impression Pro offers multi angle (2) & is mid range price, but many find it a bit buggy.
Vonhosen:
To be fair to DVD-A multi angle is not considered a basic feature in authoring apps. More expensive stand alone authoring programs such as ReelDVD don't support this either
As disappointed as I am with DVDA, I would have to agree that multi-angle is far from a basic feature. I doubt that very many authoring packages will ever include this feature. Even Hollywood movies seldom include multiple angles.