Those arguing how 1k hats should be removed because they have no 'value' makes no sense to me at all, whether you're a 'hat chaser' or you worked hard and put in your time for that hat you have the right to be rewarded for it, blame the leader for their decisions in who gets the hat but no way should they remove it
As for this update, it's a great move. It provides an incentive now to go for 5k and really seperates the value between a normal hat and an animated hat, sort of like a shiny card vs a normal one in Hearthstone.
This update also provides a foundation on the value between gif hats and normal ones, gif hats can now be considered 'rarer', so for the future perhaps animated hats are charged more than normal ones, or perhaps even there could be an option in shops to buy a gif version of the same hat for a higher price. Just thoughts though