I work on a lot a Morgans and love Morgans. I love that Morgan have always tried to stay true to their heritage and spirit. A percentage of Morgan owners are purists and appreciate the "vintage feel" of the Morgan ride but the new 3 Wheeler is not cheap and most owners expect more.
I have driven a Miata and a Triumph Spitfire that Fatcat Motorsports modified/redesigned the suspension. Both cars were transformed.They designed a "wishbone" rear suspension for the Spitfire instead of the "stock" transverse rear leaf, car was amazing to drive.
The 3 Wheeler is a work in progress. Like any car manufacturer I am sure Morgan will address problems and make improvements as they build cars and see where problems lay.