BFG said:
There's no commitment with the promo.
Cool. Then it's a $0 promotion that would give me 6 months to try out the HD pak and see if it's anything I'd want to keep. Of course I'm stating the obvious and that's how many promotions run, simple "try before you buy",
and look for the floating asterisks and fine print.

I'll ramble a bit longer and say yes, Dish, that would be a good idea to open that to existing customers. Still they should do something for the existing and past HD subscribers though. But this would be a step in the right direction, against their usual plans of just drawing in all-new customers and leaving loyal long-time high-end customers twisting in the wind.