I don't know about Aish. But HA comes across as a practical guy. If things work out in his favor, he can be the lead as well. It all depends on TRP. I don't think he will accept a project to become a male Vamp. Given his stature as far as my knowledge goes is not less than Neil, he can aim for it.
I've no where said he will be a male vamp though he himself said in an interview that even he don't know his character going to become negative or positive, it's all in writers hands nd numbers,haan that doesn't mean he is as equal to as Virat bcz he cannot,(just bcoz we think he can't accept role less than Neil ,reality won't change bcz its sairat show nd Virat is core character ,nd yes long running pl as supporting role hosakta hai until sairatreunites,nd he is just like antagonist pl, nd his character arc depends on writers nd numbers,😊