I could probably like it with some changes.
Ive won a couple times but it just gets too repetitive, pray flicking 100% of the fights. Nobody else thinks of flicking smite to get the other person's prayer down for some reason. Anyone that cant pray flick will get annoyed and stop playing. For everyone else it will be fun for a while and then die out when the hype is over.. More dead content
They will have to add some real rewards if they want to keep it popular.
A fun thing would be if they added it as a clan wars mode and have some multi combat areas. Include it as something for the next clan cups. That will make it far more interesting.