Personally I believe alterna would have been a strong single on its own. Plus we always get extra pvs in albums, MY STORY had three. And personally I'd prefer less pvs and more quality than more and being rushed just to have two pvs in a single.
Also now that half of her album was recorded for Sweetbox I wouldn't be surprised if she put teens in her album too.
Anyhow it does go both ways - you get a preview of what you'll get in the album before however yeah in the end you'll be pretty tired of hearing the same songs for a year and thus you'd have less songs to hear in a full album. That's how I feel