It is good for a single squadron guard base airspace, but hardly one of the largest complexes in the US and I think it'll show itself to be inadequate for the EX. I think the MOA is only like 40 miles wide which will be a problem and unless they can move some of the jetways the high altitude is too short for a long look. Just off the top of the nugget of airspaces I've used that I'm pretty sure are considerably larger: the UTTR, NTTR, San Diego west coast complex, Edwards, basically the entire East Coast from Boston to Orlando, Berry Goldwater, Holloman, Gulf Coast, Hawaii, and Alaska. And many of those airspaces are multiple times larger than Alpena and just the one's I've used, I'm sure there are more.
Overall the Alpena complex is great for A-10s, ok for F-16s, but hardly what the EX needs.