Looking at a weekday next July I see 37 departures -- 5 mainline, 24 E75, 8 Q400. A nice focus city but here's where those flights go:
22 to Washington/Oregon/Idaho
11 to California
1 each to AUS, LAS, PHX, ORD
The logical connections this schedule offers are pretty limited. And then when you note how many of those possible connections have nonstop service on Alaska and/or other airlines (like PDX-LAS, SEA-AUS, SMF-ORD, GEG-SFO) it's not likely to serve a lot of connecting "hub" flow.
Here's an example. There's cluster...maybe even a "bank"...of ten flights each morning arriving between 917 and 1010, and ten flights departing between 945 and 1050.
There are definitely some legit connections and thru flights there such as PAE--ORD, LAX-GEG SFO-PUW. But many of them have other options, for example PDX-AUS. PDX-BOI-AUS is the fastest connecting itinerary Alaska offers, leaving PDX 7:30am getting to AUS at 255pm. But Alaska has two daily PDX-AUS nonstops including a 7:00am arriving AUS as 12:52pm. There are two great GEG-BOI-LAX connections but bother of them have a nonstop GEG-LAX overlapping them. And with a 30-minute minimum connecting time some possible connections are scheduled too short. For example the new flight in from Idaho Falls arrives 1005 and connects to PAE/PDX/ORD/GEG, but it arrives a bit too late for a legal connection to PUW, PHX, AUS, SFO and LAX. Again it's not that there are zero connections they will run through Boise, and even when there are overlapping nonstops those Boise connections may come into play when the nonstops sell out (or sell out of cheap seats), and more options allows Alaska to manipulate traffic routing with pricing. But it's still not going to be a whole lot simply by the nature of what they are operating.