yes
yes
no (maybe a different mode for this)
no (you have to be used to fighting vs different guns if you cant play vs op/odin in a dm you wont be able to in comp)
yes
bro i have no problem with awp/odin in comp i am a awp abuser myself but damm its so annoying when you just want to aim train and theres like 3 kids playing full sound sitting in corners with this shit