World Championship in Heroes of Might and Magic III.

Maybe it would have been better to suggest playing with a pre-defined set of rules, because the current list of rules is very long, questionable, and time-consuming...

but then, yes, it's questionable how many people would sign up...

by the way, then it would be possible to create separate settings for each template and upload the necessary settings file
Jebus.dat, 2sm4d.dat, 8mm6.dat

And in the settings, specify all the prohibited spells and artifacts and other rules that can be configured.

Then, a short list of rules + a summary table like
http://heroeswt.net/rules.php
but without mentioning the settings, so that the list of rules is really short.

And a separate summary table showing what settings are enabled for different templates and what they mean - i.e., this information is for reference.

But this is a general idea, not for this tournament, because it will not be possible to achieve mass participation if you play with a pre-defined set of rules....