Between this, and their new secondary power pools from the days of SCORE, it feels like blasters are getting a rather extreme over emphasis right now for balance tweaking, and this is just going to exacerbate it. At the moment other archetypes have enormous issues as well (Tankers, for example, pretty much have very few compelling reasons to pick a secondary not named 'Titan Weapons', Peacebringers are, uhh, peacebringers, just to name two), and this change is just going to exacerbate the balance issues already present within the various primaries and secondaries of the blaster Archetype (for example, /devices goes from 'okay I guess' to 'why?') and require yet further changes to blasters. It'd be nice if other ATs could get some love after this if it's still going through before the balance cascade this is going to cause for snipers is addressed.
Slow Snipe is cool at least but falls into the same issues as stalker's Hide, only way worse since it's considerably longer than the 8 seconds Stalkers have to wait for. Just takes too long to fall out of combat for it to feel good in a game that's all about GOGOGOing.
I also feel like this change is falling prey to the cottage rule (much as I hate the insane example the devs gave for it) pretty hard, because reducing the range for snipes is pretty immediately obviously apparent with even a few seconds of playing with it. Obviously something needs to give if snipes are always going to be instant, but such a heavy reduction in range is removing the use case, as sub optimal as it may be, of people standing far back to attempt to take foes out one by one. Between that and considerably changing how blasters currently want to build (giving them fewer options now since there's no longer a decision to be made between "do I want to go for fast snipe, pick a set that doesn't have a snipe, or just go /devices and call it a day"), it feels like this change is ultimately a net negative for the archetype.