Lets remove Q, W, F, G, Z, X, C and B alltogether. We can manage quite ok without them!

It is very hard to understand the negative crowd in many wislist topics. The second someone asks for something, this crowd crawls in and makes tens of excuses why the wish is bad or useless.
The oldest and most idiotic "reason" is "if you give this then they would ask more and more." SO WHAT.. let people ask for anything.
When you go out to your boss to ask a raise, do you expect him to answer with same logic: "No I cannot give you anything, because then you would only come back next day asking for more!"
When there are CLEAR reasons why some suggestion would cause difficulties, state THEM, but not when you only speculate that this MIGHT lead into some difficulties if this this and that happened and more was given... We can anytime speculate that granting any AH related wish may make some dictator mad in some country and start a nuclear war

What would be so difficult in a simple HTC statement= "Call signs can include only following characters...". Allowing the durned foreigners use their own keyboards in text radios and in game keyboard maps is NOT a threat to you. It does not promote terrorism or take you money or women.
Just like if more than 8 charactes would be allowed in call signs (suggested in another thread). It would NOT have to lead into giving more and more characters time after time. One could simply study current trunkated callsigns and check how many characters would be needed to type out most of them. Then just draw a line somewhere. 8 character obviously come from DOS relic and not from any other reason.