A few months ago, EVA's IG announced a sale of the Hello Kitty carts they used on the planes. So you know the days are numbered... Supposedly it cost a lot of money and I guess it is just not worth it for them anymore. They might also be able to use that Hello Kitty area at TPE T2 for something else...

Another interesting thing is that Kitty service items seem to be popping up on some routes (e.g. pillows, etc.) even though the plane itself is not a Kitty Jet and the route is not a Kitty route.