RE: Proposition to change the prefixing policy

"On the other, looking at the latest flexbox spec, it wasn't until the preparations 
for last-call that a bunch of naming changes were made."
The same thing happened with Gradient. When such changes occur says little about their 
value - given how popular the feature was I would certainly argue that gradients were 
already usable enough - and we shouldn't assume the proper naming can only be decided 
late in the process. I think naming is something that should stabilize earlier rather 
than later and wouldn't mind additional incentives to maximize the odds that it does.