Seriously? The rest of the world (with notable exceptions) uses daylight savings time. Do we really need to make a change? It becomes way more of an inconvenience than the minute it takes to change clocks twice a year.
And plus look at this map, just which time zone do we want to align with during the 6 months that we're not in sync with MST? Either way looks ridiculous. At least saskatchewan can exist somewhat in both. Alberta would stick out like a sore thumb.