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.
I can understand this statement. My wife is always worried about that too, I'm a bit more relaxed.
Has anyone here ever lost anything from their car or even an entire suitcase from the luggage rack while parked?
Whilst I have never had anything taken from my Morgans, I have driven soft tops all my life and have had things taken from inside the various cars and the roof slashed to gain access to 2 of my cars Also had a suitcase and detachable luggage rack forced from the back of my MG Midget damaging the boot lid, over the years. But in the context of the number of cars I've owned and miles I driven over the years, its not too bad a track record. I've had a holdall carrying my waterproofs from my rear rack taken off one of my Harleys when left unattended, which was weird as I'd left a very expensive helmet, glasses and gloves hanging from handlebars that were left untouched
But I never try to attract the opportunist, I prefer them to just walk on by.