I can't agree with you more. The text to png is something I asked @jonathan. I've recently had this strange anomaly on window based computers with my recreated slow-mo easing effect as it was all jagged and not smooth but looking at the greensock version showed no problems.
On second thought, I’m wondering if poster image feature would do this now if I hide all layers but just have a text layer? it’ll probably create a jpg that has a background with no alpha support hmm 
@jonathan?