I recall that during the 2008 Superbowl, BellTV managed to do something to avoid simsubbing in Quebec.
Since they simsub from the uplink, everybody received the simsubbed Superbowl.
However, they somehow allowed a re-map of the original American Superbowl feed to a new channel number and allowed acccess to this channel only to certain regions (perhaps by city or province).
I was able to watch the un-simsubbed version of the US network on a different channel, while the original channel position was showing the simsubbed version.
CRTC told BellTv they could not do this for the Superbowl only (for future years) because it was not BellTVs current practice to do this type of re-map. Perhaps if they would do this year-round and make it a common practice, it would not be seen negatively by the CRTC.
Anyhow, it just goes to show that there are ways Bell TV could do this (at least in Quebec where they do not carry Montreal CTV or Global in HD). I am sure there are plenty of other cities in the country that could benefit from this way of doing things.