Both Interlingua and Ido are improvements over Esperanto.
But as it is with any language, programming language, or ecosystem in general: There is strength in numbers. Esperanto is great because it's easy to learn (Europeans have an advantage, ok) and it's the most popular constructed language, meaning there are good resources and actual people (few, ok) to talk to.
But as it is with any language, programming language, or ecosystem in general: There is strength in numbers. Esperanto is great because it's easy to learn (Europeans have an advantage, ok) and it's the most popular constructed language, meaning there are good resources and actual people (few, ok) to talk to.