whats the point? if you make a 1v1 map that can only be entered by 1 guild this will turn into such a tryhard fest that you might as well not do it at all. Both arti and tyrants will only join if they have max numbers.
We already have 2 events like this, DT and TW, DT has been empty for us for months, and TW is the same.
If you want GvG come to either one of those events to lose.
It also wouldnt be fair for smaller guilds who want to have some fun backstabbing and making baddies mad