Niantic has shown they give consideration to movesets with Vaporeon
I've always been one to complain about ridiculous movesets on pokemon. It's something that is incredibly frustrating at times when evolving a great mon you're excited about. Sometimes you wonder if any thought is given to the moves a pokemon can learn. As of Gen 2 all the Eveelutions have two quick moves instead of one with the exception of Vaporeon. The Eveelutions have the luxury of always having STAB moves. With that being said I'm pretty sure there are only two water type quick moves in the game in water gun and bubble. If Vaporeon was able to get bubble as a quick move it would make it an even better defender and even more prominent in the meta. I'm pretty sure this was considered when they decided to not give Vaporeon access to bubble. I see this as a good sign that we have hope for more thought out movesets in the future.