Yeah, they would have. Because Tom took the songs blink was working on and recorded them for AVA. Blink would have most certainly sounded at least somewhat like AVA. Songs on untitled sound a lot like AVA to begin with.
He used ideas from blink demos for AVA songs. To infer from that that blink would have sounded like AVA down the road is pretty unrealistic. I doubt that their sound would have gotten any closer to AVA than it was on the self-titled.