I addressed the Fear of the Dark thing because Bruce mentioned it in the interview, but more generally I agree with Stadler, with the rotating tours we get the best of the two worlds. Could be better? yes (Deeper cuts, history tours having more "original" material and obviously not Fear of the Dark). Could be worse? absolutely yes.
Take The Book of Souls' setlist for example. 6 new songs, a relatively rare track (Children), the title track of an album that comes back out of his proper and historical tour (Powerslave), the show not ending with the usual Running / Hills / Sanctuary... that was very bold.
About the Somewhere Back in Time tour - I've read that probably they didn't foresee the huge success of the tour, and that maybe it wasn't so clear at the time (or profitable, to be cynic) that a Maiden England tour would be both requested and successful, and so "just in case" they snuck in the SIT and Seventh Son songs. At least, we got to hear Moonchild played entirely live, intro included, first time it ever happened (and ever will), but three songs out of Seventh Son was overkill.
And Fear of the Dark itself can stay - we've all head it a gazillion times, sure, but it's an absolutely monster of a live song, it's just that they lost a golden opportunity to make the fans miss it and want it more by not retiring it for the history tours. As said earlier, I dare anyone to walk away from having seen THE GODDAMN WORLD SLAVERY TOUR, an historical tour brought back for a younger generation that never got to see the show, the songs and the monumental stage set, by saying "Meh, it's a pity we didn't hear Fear of the Dark".