Please make sure, when user created terrains are allowed, that the new Custom arena terrains must pass through the same test filters as the regular arena terrains.
The filter could report problems as Errors, Warnings, or Info, depending on the level of non-compliance. And if the filter would run as a plug-in, it could be updated without touching the TE or the server side.
In the past, a H2H terrain would run even if it didn’t meet all the requirements of the regular arena. This caused lots of problem and confusion when terrain creators moved to make terrains for the regular arenas, or when testing things. You couldn’t depend on something working just because it worked in a H2H terrain or offline.
Thanks