But what we want is the following:
- We want the player to be using skills often. It is boring if the player types "attack" 90% of the time, and is saving his skills for a few desperate situations.
- We want the player to use all his skills, because that is more fun than just using the same skill again and again. Now all skills are unique tactical options; and if some options are better, or more generally useful, than others, the player will use these options more often. This means that each skills must be the best available tactical option in a fair number of situations.
That is right, all skills are free the first time you use them during a fight. So you can do everything for free once; and for easier fights, this will be enough. If you need to use a skill more than once, the cost keeps increasing.
This will reward players who use all their skills; it will also reward players who use their skills in every encounter. I think this will lead to diverse tactics, where people weigh the pro's and con's of paying Zeal for re-using a particular skill or using another skill that is still free.