I hate having to defend Gore/ORDA, but I guess you're going to make me.
Snowmaking is significantly better than it was before the 2018 upgrade. They have never made snow on Moxham before, or opened 46er on snowmaking this early, and this is in one of the worst seasons I can remember. In fact, it seems they are making so much snow that it seems the groomers can't keep up on pushing out the whales.
I don't know where you got the idea that they were only making snow on 2 trails last week. They opened 4 snowmaking trails at the ski bowl, and would've also been able to open Sagamore, had the groomers kept up. It's possible that you only saw snowmaking on 2 trails at a time, but most of the snowmaking last week was at the ski bowl, which would've been out of public view. Same thing last Sunday when I skied there.
While it hasn't been perfect, I think this is Gore's best year for snowmaking since I started skiing there. They didn't always run in the right places at the right time, but I have never felt that they didn't have the system maxed out. It's also entirely possible that 2 trails will max out the system, depending on how long each trail is, how many guns are running, and what flow rate they are running at. Gore's pumping capacity is 6800 gpm. The new HKD guns have a max flow rate of 80 gpm, which can be used in very cold weather like this. If you divide 6800 by 80, you get 85. If we assume 100 foot spacing of guns, then you can run every gun on 8500 linear feet of trail. That's 2 46er sized trails. Colder weather does not necessarily mean more guns running. It just means that each gun can run at a higher flow rate. Sometimes they might opt to not run the guns at the maximum flow rate based on the weather, so that they can run more guns on more trails. This is called rationing water.