The bench seat would be a nice option, an easy and reversible retro fit too. My Caterham came with both seats and a bench, I prefer the look and feel of the bench.
It’s rarely mentioned and I think the lack of publicity is a missed marketing opportunity, but Morgan must be the only manufacturer who offers fully polished body as an standard optional extra. If I recal correctly, it was about £10k, which for what it is, is pretty reasonable.
Brands such as Ferrari, who offer bespoke options, charge £10k extra for what they class as a special colour.
I dare say, you could order a new Morgan unpainted and spend the rest of you life polishing yourself, I wonder if anybody has done that?