@The trout.
Excellent original thought D. Actually the line to S.M. can be taken down to the old Tesco site there without much difficulty and I am not sure why the preservationists do not plan that, as there is good parking access.
Excellent Further Suggestion there. I didn't think about the "Old Tesco Site" (Don't know when you were last in SM, But the old Tesco Store is now a Dobbies Garden Centre
). But even so, the parking for a Garden Centre is pretty much overkill so a very good suggestion. The station could be sited next to the Garden Centre and if Car Parking became an issue, then use the already existing car park at the Defunct Focus DIY store just across the road. Or my original suggestion and use the Focus DIY site for a Park & Bus/Rail Ride to a new station just outside the town?
Also how could I forget Taunton - Minehead?
Then shift all the Butlins Holiday Makers from the Over Capacity 28 Bus Service onto a direct Taunton - Minehead or even Bristol Temple Meads - Minehead?
Finally. CfN's suggestions of Cullompton & Wellington are very do-able at low cost. The former just needing a new station installed along the existing
GWML▸ . A possible good site is where the Motorway Service Area is. Then the car park can be expanded and you'd certainly be able to turn a bus or three around in there. Expanding on both CfN's idea and the Minehead one, Norton Fitzwarren could also be a good suggestion. Again, all the kit is still there!