Exmirai

You are able to do this only through code modification. Look at jamme or ja++ code there support of widescreen hud/autoscale

Why do u want to play ja on pi?

Afaik no, only /wait [msecs]

It is possible, but you'll need unified cross server skin system ( like csgo does )

Please don't try code above xd

You wrote wrong code. You need to get the list of all pictures and then show on screen picture which is get by randomizing number. Something like this. P.S: code may not work as i wrote it from phone and wasn't coding for a long time https://slexy.org/view/s2P7pdBown