Here's an interesting idea that I've been working on a little bit, not as a high fantasy trains everywhere thing, but a more modest proposal. It's a set of additional/enhanced MAX BRT routes. Here's the MAX and LRT service as it exists (including the NC 301 which is actually a better service than any MAX):
And then this is the core of the proposal, which adds two MAX lines (shown in rose and mint) and extends the purple.
The purple is now a through service, connecting the downtown to the U of C/Foothills area and then on up Shagnappi to North Pointe. The rose and mint are circumferential north-south routes. Rose connects Saddleridge to Somerset via 52 St, the SE industrial and South Health campus. Mint connects Crowfoot to Somerset via Bowness, Sirocco LRT, Westhills and Buffalo Run.
But you may have noticed that some of the lines extend past the page. Here are the four regional MAX routes I propose (in the interest of saving data, I've used thumbnails for the detailed routes): To give them a stupid name, I'll call them Regional MAX, or ReMAX for short.
ReMAX Orange: Airdrie to Cochrane, connecting the north and south Airdrie transit hubs with west Airdrie, Cross Iron Mills and vicinity, then the existing orange route, extending to Crowfoot and then on to central Cochrane. (Cochrane's road layout cannot meaningfully be served by transit.)
ReMAX Purple: Airdrie to Strathmore, including central Airdrie, Cross Iron Mills, North Pointe, U of C, downtown, then the existing purple route with a more streamlined through run of Chestermere and on to Strathmore.
ReMAX Mint: Cochrane to Diamond Valley, connecting Crowfoot, Bowness, Sirocco, Westhills, Buffalo Run, Evergreen and running through Okotoks
ReMAX Rose: Crossfield to High River, connecting east Airdrie, the airport, the 52nd St corridor (stopping at the same places as Orange, my mistake), South Health Campus and then on to Okotoks
And then putting it all together, we would have:
Assuming half hourly frequency to start, this layout would actually result in 30 minute headways most places, but 20 minutes to Okotoks and Cochrane, and 10 minutes to Airdrie effectively.
To be slightly more practical, lines this long are really difficult to keep schedule to, and I don't know that it actually makes that much sense to do this much through-running. However, one service pattern that could make sense would be having alternate trips go out of town at each end. For example, a ReMAX Orange stop westbound on 16th Ave could have the following pattern:
From Time To
Saddletowne 8:00 Brentwood
Airdrie 8:07 Brentwood
Saddletowne 8:15 Brentwood
Saddletowne 8:22 Cochrane
Saddletowne 8:30 Brentwood (repeating)
where the regional runs alternate with in-city runs, and the buses that do regional runs only go into the region on alternate directions. It would be a little more complex to use (although we already refer to LRT lines by their end stations) and would make region-to-region trips a little slower, although to be honest, if you're on the bus that long you need a bathroom break anyways.