Here is how I see things happening. In a two years or very shortly there after Dish will shut off the standard def feeds because lets face it they are all but obsolete now. Stores quit selling Standard def tvs 6 years ago and I do not know anyone that even still has a standard def tv and it is not like I hang with rich folks. At this point high def service will just become the standard service and not something that is line item charged more for. They will then raise the cost of everyone's service and the free hd for life will be pointless because they are no longer making an additional charge for HD
They could cut off Standard Def feeds but that requires them moving channels over to at least a few main satellites such as 110 and 119 instead of just 129 or 77. Just send notices out that they will be shipping them all new HD equipment and instructions on how to put them in, do certain regions only thruout a whole year so not to overwhelm everyone as in service providers and be done with it. But again you would have to move all HD channels to a few main satellites so those with old Dish500 systems or those only aiming at 61.5 and 72 or whatever other EA sats would be able to get it with a simple receiver swap and no need for a tech sent out to re-aim sats. Many people with old Dish500 systems just can't get 129 or even some Eastern Arc sats so it is a must do situation to make that happen.