When ideas about reviving old hero skills comes out, you should firstly think about hero usage.
We've got many messages about Invokers & utility hero mess up SD/MD games. They took a slot to provide skills but cant be chosen as model. So at this point we want to introduce playable hero model for any new skill set. Thats increase time wasting tho. Hope that would help.
Hello,
Im not an expert on the coding part. But perhaps something like giving the person 1 extra hero(Like Ezalor "2") when they get Ezalor, would be great. This would not count towards the random heroes, you would only get it if you get Ezalor. Same for Visage. Im not sure how much coding is required on this part, but probably not by a lot.
Thanks anyways!