If it 'ain't broke why fix it ?
It might not be "broke" but a standard front suspension set up on a 1952 car is a long long way from good let alone perfect.
Why go to great lengths to make your Morgan drive and feel like a modern car?
You'll never make a Morgan drive like a modern car, but you can make it so the tyres stay in contact with the black stuff, and the wheels go up and down like there supposed to.
Why buy a traditional Morgan in the first place?
Because he paid £180 for it in 1968, as it was the best performing car for the money at the time, (all 68 of it's Vangard horse power) and doesn't want to get rid of it just yet.
Why have Morgan resisted the trend to upgrade their suspension since 1910?
They have constantly throughout the years, negative camber, roller bearings, steering racks, telescopic dampers, rebound springs etc. And it has taken so long because it costs lots money to develop suspension.
Why spend good money changing your Morgan into a Lotus Elise?
It's far from an Elise, they don't leak when it rains.
One of the main attractions of owning a Morgan is that it can be Modified, to make it perform better, either make it faster, handle or make it more comfortable to tour in, generally make it a better sports car for doing "motor sport" in.