I don't know who asked for alacrity, but the trade-off was not worth it! The cool down on the sand shard combined with the 8-second time means you never have more than 1-2 shards up at a time. It makes the class unplayable. Previously you could drop three shards and get through a five-key rotation; now, you are lucky to get two keys in before you have to lay down another shard.
Good job ANet thanks for screwing my main! All for the sake of giving a minority group something the majority never asked for a useless alacrity boon.