The fact you think a "spar arena" is a rectangle with walls and nothing else.
While a PK arena is an arena like the current gst's scares me.
Spar=1 v 1= PK
Pk=Player killing, players vs players
Gangspar=PK
It is named gangspar because its a GANG event that consists in TWO gangs "sparring/pking" eachother till one team is fully eliminated.
So yes, the GST has a good name.
Gang Spar Tournament. Gangs are sparring eachother in an arena.
If you still think that an arena with covers/ that doesn't look like a rectangle is not spar related, then you're wrong.
Tell me what for you is a spar arena, and what is a pk arena? Its the same.