Carrara interface is not my favourite either and generally dark UI colours that are so fashionable today are depressing.

Not long ago I loaded Blender to see how it has evolved over the years but everything was too small with 4K monitor. Maybe there is easy way to make things bigger if could see the text on menus, but things like that really give bad first impression.

For example Metasequoia has auto DPI adjust enabled as a default on settings, so people with normal eyesight can start experimenting straight away. Small things like that matter.