I also don't believe they will add that feature,since VocAlign can do it so well and does have good sales once or twice a year.
There is a youtube video from Studio One Expert showing vocals being aligned using bend markers.
I used that on a song and it worked great, it was pretty tedious, but it didn't leave artifacts, since I was only sliding the parts slightly and it demonstrates how powerful the built in funcitons of Studio One are.
Another option is using melodyne, even essential allows you to move the timing around. I have used both, but the bend markers were nice because you can visually see the changes.
All that being said I believe an automatic program like VocALign is probably worth the money.