The unknown players are players who won the CL (Boban, Prosinecki, Suker) the unknown coaches are Blazevic, Bilic and Tomislav Ivic. The Croatian referees will never stand a chance to officiate in a World Cup because their European colleagues from the big leagues or from the EU are superior to them and will always be preferred to them. If Croatia was in Asia, I am pretty sure that we'd have had our referees at World Cups, just like we had them until 1990 when Yugoslavia was one country. If Syria was in Europe, the most they'd officiate will be the UEFA Cup qualifications in July.
And Switzerland is a special case. You should know that. They are like Germany, Italy and France into one. Always preferred to others in everything. Plus, their league isn't weak, nor is their NT. It's actually better than any middle-eastern NT.