My first street-legal car was an MGA (42 years ago). I have a '69 MGB these days (and a Miata) but I still like driving MGAs.
It's a wonderful, forgiving and elegantly "pure" classic that's closer to Sprite (my favourite car) than most of the other classic Brits.
Not comfortable in the "normal" sense, but no surprises when driving.
I particularly like the steering 'feel" and even the drum brakes cars have decent stopping power.
For me (6' and 200 lbs) there's plenty of room in an A. I agree that the B seems to have a goofy seat height problem that puts the upper windshield frame in the line of sight (for me, at least).
I doubt an MGA is really much safer than a Moke.
For your viewing pleasure,
~Here's Me~ (in my Spridget) chasing my pal, John Faulkner in his blue 1600 MGA (with white stripes). The track was cold and damp (New Hampshire a few weeks ago) and we both had "dry" tires. Both these "primitive" cars were all over the place...but even so, both cars were easy to push to their respective limits comfortably.
For more MGA "fun" look at
~This Video~ around the 3:15 mark you'll see John pass me just as his glove gets caught in the steering wheel. I was full on the gas and nearly hit him.