Someone already said that either the created language takes from too few source languages and alienates speakers of languages with no common characteristics or takes from every language family and becomes a horrible mess that’s hard to speak for everyone.
So if a world language is a bad idea no matter what languages you use as a source, why not have Esperanto or something similar for Europe/English speaking world and then a different language for Asia, and another one for Africa. You’ve reduced the number of translators needed and left most people with a language close to their mother tongue. You could also break the suggested regions in to smaller sections eg give Germanic Europe a common Germanic language. West/south Europe get Esperanto, east Europe sets a common slavic language. You still get languages that don’t neatly fit like Hungarian but its better for most language learners than the last example.
Personally I’d not propose universal languages as a utopian idea and instead promote indigenous languages such as Catalonian, Breton, Irish and promote learning many languages in a post work society.
My problem is not with inclusivity but with promoting uptake. If you are familiar with the grammar or phonetic sounds or some of the vocab, you are more likely to find that language easier to learn.
Both English and Esperanto share the same problems of universal languages that I mentioned. English does have the advantage of number of speakers but it is a mess of a language for people to have to learn.
Again to reiterate my counter to universal languages, why not learn and potentially help revive your local indigenous languages. In a world where universal translation exits on our phones everybody being able to speak the same language matters less.