One of the 61.5 sats is failing and losing transponders. DISH couldn't depend on this sat for any new hd. So they put it on 72.7 ,which has more than enough room and a strong signal. IF you want to be future proof , you can go with either a 1000.2 western arc dish for 110/119/129 OR an eastern arc dish 1000.4 for 77/72.7/61.5 .
IF you really want to be sure, you can add a side sat for 61.5 for the western arc dish Or a side sat for 129 for eastern arc dish. Both dishes allow for another satellite to be run into the lnb port. DISH is working on moving an older satellite into place for 61.5 to back it up. Then they might move the hd back to 61.5. But I wouldn't sit around and wait for that. Get an upgrade to either western or eastern arc dishes and you can get one through DISH for $15.00 if you add the home protection insurance for $6.00 a month.