First, to avoid losing a captured relic, a clan needs to get rid of dead players from its own clan because the attack will be directed
primarily at them or at weak players (by the way, this is another incentive).
Second, offline tournaments will also gain some incentive
if the Council of Heroes offers an extra artifact as a reward in this tournament. Otherwise, clan wars are constantly held as part of such tournaments, but without much enthusiasm.
Added 7 minutes later
Well, if you want to create a unique map for battles for each clan war... I could help with creating that map. I don't know scripting, though...
First, no one will wait for the map to be drawn.
Second, when the global map is ready, the maps of
sectors with entry points from neighboring territories and a choice of castle should be drawn immediately.
P.S. Scripts are not needed unless you want to somehow diversify the online battle for territories (for example, arrange a scripted ambush)