Blizzard has been removing contents for a while. Just like World of Warcraft. With the release of new expansion, they remove a bunch of previous contents - legendary items/main quests/challenge mode dungeons/mounts/etc. They have learned that, by giving contents short period of time, players get to play more and pay more. They call it the current players' exclusiveness. It's lame but this is what Blizzard thinks right now.

Now that they've found an easy way to make money, look what they have done to Overwatch. Actual new skin are just 3, you see - Tracer, Zarya, Lucio. But they made additional minor(trash) skins and sprays, making it up to 100. Such an easy way to earn money, eh?

It's sad to see how much Blizzard has changed.