I'm really looking forward to seeing what Morgan brings as a replacement for the PlusSix... especially the motorisation.
Does a Morgan need a boot?
“Does a Morgan need a boot”?
IMHO
In the past, those who needed plenty of carrying capacity opted for a 4 seater.
Otherwise a luggage rack along with any space behind the seats, has been used.
19 years of ownership of my 4/4, c50k miles and numerous trips abroad have all been made, just using a luggage rack,

Bud
4/4 - Stanley
Bud,
I understand and admire your sentiments, having owned 2, 4 seaters for that exact reason you mention. However, I have carried luggage externally on my first 2 seater 4/4. To be honest I have never felt happy with either of these arrangements, as under both circumstances the luggage is in plain sight and therefore may attract the wrong attention, making parking up any where whilst loaded a potentially fraught experience, I could do without.
It's bad enough with an open topped car that there really hasn't that much secure cubby hole space for small things let alone big suitcases in plain sight.
I would have to see the overall design of the car. as to whether the boot adds or detracts from the shape of the car and how practical the boot really is.