Many Leaf fans will actually agree with you that Gilmour and Clark aren't typically players whose number you'd retire. Honour, sure. But not retire. Fact is they were already honored, so they were grandfathered in to be retired. I'd argue it would actually be classless to remove them from the group of honored numbers once you convert them to retired numbers. You couldn't retire 15 honored players' numbers, but not retire the other honored 2. Standards will be higher in the future.
As for Legends Row, it's not completed. You didn't even see Keon, Horton and Broda at the World Cup, since they were unveiled a couple days ago. By the time it's done with the addition of Conacher, Mahovlich and Kelly, it'll most likely have 10 cup champions from among a total of 13 statues. Sittler, Salming and Sundin the only non-winners. I dunno about you, but I'll take them on my list of top 13 anyday.