I feel like going the Apex Legends route would be best, give players the option to do a longer trophy kill that's more cinematic and potentially gives you two or three times the XP, but at the cost of leaving you vulnerable to being shot by other human players while you're doing it. That way you could decide whether or not you thought the situation was worth the risk to go for the longer kill, or whether it would be better to do the "quick claim" they have now.
It just seems a bit odd to have it labelled as "quick claim", which implies there's a way to do a longer kill, when it sounds like in reality it's the "only claim".