When I complained that I couldn't get Hardcore Sports & other Canadian channels on my Sirius Visor, due to its age & old chipset, CSR offered me a new radio & install card for car (she didn't mention a specific radio model, but guaranteed it would receive all channels (newer chipset)).
Part of it is that older Sirius radios only can receive 128 channels before they "max out" - so they don't even receive all the channels in "Sirius Everything" now. But they're only missing three English channels (97 Sports Express, 98 Hardcore Sports, 138 Weather Network Canada), three French channels (88 Rock Velours, 89 Energie 2, 96 Sports Extra), and one multilingual channel (95 RCI Plus).
This is not an issue for Sirius Canada, because even with older receivers, they are only licensed to deliver a total number of 120 channels in any case, since they only have twelve Canadian stations, and the CRTC mandates 1 Canadian channel for every 9 American channels. So they just send out an activation to the radios for "Sirius Canada Everything" that only contains their licensed 120 channels, and this will work with all radios.
US radios primarily go over the limit due to traffic & weather stations.
Also, I wish we could have gotten these packages after the merger (in addition to the ones that are being offered):
Sirius Everything (No Howard, No Sports)
XM Everything (No Sports)
I think these packages could probably be offered for $9.99 or less in each case.