The first part of Starcraft II came out in 2010. As a sequel to one of the greatest RTS games ever made, it had a number of issues, the biggest one being the online multiplayer was intense, stressful, and in order to be a decent player required several clicks per second to keep up with unit production. If you didn't like playing in this way, there was no other way to play - unlike the first game, custom games with more casual mechanics, chat channels, player-made lobbies and so on did not exist. Essentially it was made for the pro player.
As a result, interest for the other two parts of Starcraft II (Zerg and Protoss expansions) has been much lower than expected of a Blizzard game. According to their own data, most buyers only play the single player and never touch the multiplayer at all.
For the beta of the Protoss expansion(the full game is scheduled to come out within the next few months), the devs actually made an amazing change. One of the key mechanics of Starcraft II was that each faction had a "macro mechanic" that increased unit production but required a lot of attention and clicking to keep up - e.g. for Zerg you had to press 3 keys to "inject larva" every 30 seconds, and if you missed the 30s mark any time, you'd lose a few seconds of unit production, which is huge for a strategy game. This had to be done manually and could not be queued up.
The devs automated or removed all of the macro mechanics for this expansion on September 3, for the reason that they wanted to take the clicks away from those repetitive actions and spend them on the exciting parts of the game: actual strategy, and unit control during battles. In my opinion this was the best possible change, acknowledging that clicking for the sake of clicking doesn't make the game better, deeper or more fun.
Then the community (i.e. the hardcore people remaining after everyone else had long left Starcraft behind) complained that they were taking away the skill of the game that they'd prtacticed for 5 years.
So this week the dev team reverted the change: the mechanics will now work exactly like they did in the previous expansion. The reason being " we think the gain of having auto inject does not outweigh this negative perception that the change creates."
This is one of the most cowardly statements I have ever read from a developer. They acknowledge what the correct path is but they intend to let the hardcore, vocal community on Reddit and fansites hold back the accessibility of the game just so they don't lose the "skills" they've been practising i.e. fast clicking (there is no strategy involved in this mechanic).