We should consider this as a test phase.Currently Broadcasters, DPOs and customers doesn't have a clear idea about the future impact of this rule. Earlier each operator has some finite packs and they calculate all from that. Now since package selection is with users,a numerous unique packages are made.Thus prediction is difficult. So after 2 or 3 months by analysing the revenue and ratings both Broadcasters and DPO will introduce new packs and pricing. Anyway excepting nothing other than price reduction.
As of Now we have to pay the whole amount as the pack is set by broadcaster & but Sun will introduce HD packs too i guess to avoid dispute since they carry minimal channels and channel addition will not possible due to lack of space.
So either they will added those channels or provide new HD DPO's just like in SD.