Through the different changes in management and such, I don't think the Tri-Track series would've survived. It was fun while it lasted but there were only a handful of cars that could actually afford to run all 3 nights. Sure, cars showed up, but in today's world, it's just not possible anymore to have 3 consecutive nights of racing at 3 different tracks with a low budget team. If you don't get banged up, you could make it work, but for how long could you financially afford to do it?
If all of the tracks were still around, it would definitely leave options on the table for drivers to go places. Also, it would give lesser and newer drivers a chance to establish themselves. Yes, it's important to race against the best drivers and learn from them as well.