How exactly do you aoe clones with axe/shield and rifle ? unless he uses pistol/staff and you can kill clones with shieldblock reflect you have no reliable way to aoe clones down.
Any decent necro should know that if the other team has a thief the first thing to do when you reach a point is to place a reaper mark under your feet.
That said, the problem lies within stealth completely disappearing only 1 second after the end of the actual effect for gameplay reasons, the thief is still targettable (for example with the get target key) but you don’ t see it for 1 more second. To completely solve the problem i use the autotarget option that automatically targets your nearest target when you don’ t have one, it doesn’ t work on stealthed targets but it’s perfect for thieves who already made their opening but aren’ t being rendered yet.
Are you talking about structured pvp or world vs world ? Because by the look of your post it seems that you are talking about wvwvw.
the 5 seconds invulnerability that vengeance gifts the warrior with after he uses his third downed skill is just too much, the warrior already is the only class who can stomp after being downed, why do you want to make his duty even easier.
i suggest you remove the invulnerability or at least make it stability so that with some coordination a vengeanced warrior can still be prevented from stomping someone, as things are now if you let a war vengeance (which can’ t always be prevented) you are sure to lose whatever downed fight you have going on.