One thing to note, assuming the range upgrade costs at least 100/100, that's effectively a range upgrade that costs 400/300 (since you'll be building a fleet beacon which is more or less useless till much much later in the game), TBH I think it'll be an upgrade rarely, if ever, purchased. The threat of it being in the game will be enough to deter zergs from going mass, mass muta, and getting the upgrade for small amounts of harassing muta (<12), would be a complete waist 400/300.
That's not to say I'm not happy with the change because it gives us a way better way of dealing with mutas, but it's just interesting they put it at the fleet beacon without lowering the fleet beacons cost a little.
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