re: Expats, I'm asking for info and advice on moving abroad...

Do it, if your company is half way decent they are not going to put you in a dangerous situation. The schools will probably be very good, there's a great chance your kids will basically learn french and know it the rest of their life if they continue with it in school. Belgium is very centrally located so you'll have a lot of very easy weekend trips you can do.

Yeah the muslim thing is an issue, but you can deal with it. Just don't be rocking American Flag shirts and what not.