Most of the triathletes I know don't come from a swim back ground. The pool time is also the hardest for most to get. You can run and bike from your door. I know race directors worry a lot about the swim. If you have a problem what can you really do? The boats in the water can't really watch everyone. A two mile course is hard to find. I just think the swimmers want the longer course and it may make thing more equal but I don't think it would appeal to most! So I would say most people prefer shorter swims. If you asked people here it may not be true but ask on trinewbies and at most triathlons if they want longer swims.
The name 101 does bring to mind a beginner type of race . I just think it sounds to much like math 101 , science 101 ect. I think they need a new/different name!
Sorry I meant to reply to H2Ofun about a longer swim