This is an interesting idea. Everybody brings something new and different from their background and I wonder if we'd have the same diversity as we have now. Most people don't understand each other even if they are speaking the same language 😀
As for your writings I haven't noticed anything out of the ordinary, they're easy to read.
I never really noticed but I often talk in idioms like this
"Call the shots" - Someone who is in charge
These are often confusing to non-English speakers and might think I'm shooting someone or something haha. These are fun because people may ask a question or make a joke. The conversation starters are usually the hard part for many.
!LUV !PIZZA