Inb4 F-Line does his thing...
I don't think a Commuter Rail stop at Wonderland is as helpful as it seems. Who is it intended for? Riders going from Wonderland to downtown already have direct service via the Blue Line (and probably faster service too, given that Chelsea-North Station alone takes 15 minutes). Riders who currently use the commuter rail from the North Shore to get to downtown also clearly aren't the target.
So then we are talking about North Shore commuters who intended to reach the Blue Line. Does a commuter rail infill at Wonderland help them? Well, perhaps. But...
Wonderland already is the anchor for a
sprawling network of North Shore bus routes. Those routes already offer a one-seat ride from Wonderland to the commuter rail stations at Lynn (439, 441, 442, 455), Swampscott (455 and 441), and Salem (450W, 455), plus additional one-seat rides to Marblehead, Nahant, Saugus, and areas of Lynn, Swampscott, and Salem which are not walkable from the stations.
If you have a two-seat ride from your house to downtown, which entails walking a couple of blocks to your local bus stop and then transferring at Wonderland, are you really likely to replace that journey with an extra leg on the commuter rail?
It is true that there are some three-seat journeys that might be improved by a CR station at Wonderland; there are some North Shore bus routes which do not reach Wonderland, and require riders to transfer at either Salem or Lynn to a second bus. (For exampole, the 429, 435, 436, and 451.) Those journeys would still be three-seaters, but probably the commuter rail would be faster and more reliable between Lynn and Wonderland than the buses are.
The North Shore's problem is that the Blue Line transfer hub needs to be relocated from Wonderland to Lynn. Local buses need to slog an extra four to
six miles -- in some cases
doubling their overall running length, and in some cases spending two of those miles just straight-up traveling non-stop through a marsh.
For comparison -- imagine if all of the routes feeding into Forest Hills had to be extended to Ruggles, or if -- as historically was the case -- all of the Quincy buses has to be extended to Ashmont or Fields Corner.
We know that a large fraction of North Shore commuters need to get to the Blue Line; we know this because they keep filling up the buses that run to Wonderland. My guess is that most of those journeys would not be improved by a Wonderland Commuter Rail stop -- at most you'd convert a long two-seat journey into a somewhat shorter three-seat journey.
The name of the game here is to
restore the
wildly successful rapid transit service from Wonderland to Lynn which existed until 1940 and which was
originally planned for restoration as quickly as eight years later. Extend the Blue Line back to Lynn.