The golf course is already divided by the existing railway. By the looks of it my new earthworks for the Town - Pen Mill curve would build over two of the existing holes but replacements might be positioned elsewhere nearby, and I don't obstruct the existing access paths between the two main parts of the course! Note also that I took a different alignment than the historic Pen Mill - Town connection to line up better with the new station site. This also has the advantage of retaining most of the current footpath along the old route.
Good man and I think the car park beyond the bridge, westwards, could form a station entrance and pull up facility, indeed it would have to do so. This might lead to the need for an extra multi storey somewhere. The area you use, is a very sensitive one and led to a major bust-up between green activists and the then MP (paddy Ashdown). I'm not sure whether 'Yellowham Hill Sainsbury' googling would bring it up, but the footpath, which, as you point out was along the line from Pen Mill to Town, is environmentally sacred.
I think the jury is out between a new Town and an expanded Pen Mill. Town is good if a new level of local services for shoppers and workers from the Axminster, Gillingham or Weymouth directions would be envisaged, but I think the real problem there is that for workers, they needed the line to continue to Hendford, where the major Yeovil industry is situated. I just don't see the volumes for that, to be honest.
A new Town does offer comparison shoppers a good connection, but Yeovil shopping is no great shakes. Why go from Maiden Newton to Yeovil, when you could equally go to Weymouth?
The gap in service provision is to my mind inter-urban in character and Bournemouth to Exeter or Bristol via Salisbury is just not good enough and misses out the Weymouth and Dorchester area. Even at express speeds (not provided at present) the time taken is just not on, except for those who are prevented from travelling by other means.
I don't see a great time penalty between a new Town or a bigger Pen Mill, and for the reasons above, I think Pen Mill is the better location, provided the shuttle bus service across Yeovil is stepped up and early and late services are met.
The solum from Pen Mill to LSWR eastbound line is still there. So is the solum from Dorchester to the Junction (Maybank). @MarkyT's design has embankment to the Town also still there. (The golfers walk through existing occupation tunnels IIRC).
I think that in the future the time penalty for Yeovil would not be so important, as I think that London bound trains will also be on a two tier service, the faster of which will, from Exeter, only stop at Yeovil and Salisbury. The lines have all got to back in, doubling, electrifying, the lot.
