It would be great if languages could be "upgraded" to remove the hardest parts, both for native speakers and for foreigners willing to learn.
I remember reading that a famous poet/literate (can't remember who) tried to propose that for the Spanish language, decades ago.
Otherwise, it would be nice to have a universal language that everyone can learn and speak. Obviously, English is now occupying that spot, but I'd bet that English is certainly not the easiest, nor the most complete, language we could use.
Attempts such as Esperanto and others were never carried out with enough skills or resources. I'm wondering if it could be possible to do so today.
Coincidentally, I wrote a novel ~20 years ago, in which the protagonist is a language professor that invents a new universal language, called Galatico, and "open sources" it for the benefit of humanity. I even ventured as far as designing the basic concepts of this artificial language. It was really fun. Without knowing it, I used an alphabet system (base 64, in my case) similar to the one used in the Cistercian numerals [0]. I discovered this just two months ago, when visiting a Cistercian monastery in Italy, and then reading more about these monks.
Truly fascinating, for me.