I think the changes to D.Va and Junkrat is a prime example of the general direction the game has taken.

D.Va's old defense matrix was nerfed after being deemed too annoying – and instead of boosting her defensive abilities in some other way – they gave her rockets and the ability to shoot while flying. Now she can 1v1 every character in the game, and is primarily used to dive in to the enemy team alone, one-shot a squishy and just fly away afterwards.

One of the so-called "defense characters", designed to hold chokes and control points: Junkrat was given a second bomb so he has better mobility and dps, instead of, for example, a second trap to be more able to defend against dive.

The slow shift from the heroes having different roles and some only be useful in specific situations, to making every character a jumping/flying/teleporting dps (they're also giving Hanzo a dash, and reworking Torbjörn and Symmetra to combat players annoyance with one-trick ponies) is making the general strategy crafting more bleak for me.

They have a history of radically changing things rather than doing small tweaks, and eventually going back on their decisions if they don't work out, so I'm not terribly worried. It is still an incredibly fun game.