Seth is a good wrestler especially when he has someone who can work with him, you know. He can cut a decent a promo, but I think that is mainly due to WWE writing bad promos and not allowing the wrestlers to do their own promos like *cough* Impact does *cough*. I can see him as a main eventer because a lot of people are behind him and he gets people on his side, so to say, but if anything a high mid-carder would be just as fine as well.
As I said, he can cut a decent promo, not a great one. His voice is rough, but Macho Man's was rougher and people liked so, eh, and again I said while I could see him as the main event, I think he is a better upper mid-carder than anything.
Ambrose is a decent choice. I do agree that now that he has "beefed" up, cut his hair, and trimmed he looks better and could be main event material. I am also really glad he ain't the goofy shit because while it worked when he was Jon Moxley it sucked in WWE.