1. and what the problem? if you dont understand another player then it is another player's problem that you have not known that he used rude words. if he uses your language then you always can report to admins
2. people always able to make new weapons and post them to admins.
3. thats why i suggest to be pro and practise much, you always can ask other players or buy weapon and test it.
4. yes, it is annoying, but you always can put green gas near your spot or just kill man that steals your crabs.
6. players still can ask it on that website in topic "ask weapon expert".