I run them when they're in the area, and it supports local clubs, other than that no real incentive to chase them. I prefer other venues. I don't like the test chasing get 6 passes, fail as many as you want, quantity over quality, judge shopping, title chasing, mentality of the Master nationals (yes I'm opinionated about it ). The MHN test itself is on paper-rulebook the exact same skill level and same judging as 2 MH tests, why not just run a double master? Sure No special title for passing 3 double masters, but a lot less expense, and I don't have to run around qualifying for it every year .
As for points, they would be nice, went on to the AKC and looked up one of the older dogs we lost this year, AKC has 43 MH passes accorded to her, but I would bet that count is off, she ran tests before EE and record keeping wasn't as good back then, shoot EE is missing a lot of info, I'd bet AKC is as well. It would be nice to know what a life time of accomplishment is, just for sentimental value. Of course if we got something nice engraved with the dogs names for 45-50 MH tests, we might've made those extra test.