What I really don't get about Lafayette, is that the one CBS station in the market is co-owned with the Indianapolis CBS affiliate, and would probably cost Dish very little to add. This would then allow Dish to offer all the Indy locals to Lafayette subs - if LIN (owners of both CBS stations) give Dish the same terms as cable, both CBS stations would be carried with no interruption/blackout.
(As far as Dish having to establish a point of presence in Lafayette, IN - I doubt they would - they could take a feed direct from LIN master control in Indianapolis, where all master control functions are centralized.)