Oh I didnt see this post...
I'm interested in Leo ability you described I will probably try it. For Arthur it seems a bit complicated ( It would be the only clickable hero ) and I also feel it may be broken. Sacrifice would be a good option but maybe not for arthur. At this point I think maybe we should create more than 6 heroes ( unlockable ? ) and let the advanced player design his own hero table. I'm thinking about it ( I also want a hero around money mechanic etc )
I'll try to add Accolon on the next version. Maybe with your first ability version. This one would be like not using quest every 2 turns because I guess very few player do 2 quests at the same time.