What i always like is, if skills change your gameplay, or make you think about things while you play and not just in terms of your Setup/Build/Loadout.
For example a gain a stackable buff which increases the Attackspeed and the Dmg done but also the Dmg taken.
You can use a Skill which consumes the Stacks and does a big chunk of dmg.
Could be a new or an existing one.
So you always have to balance between Survival and Dmg.
Depending on the Scaling the balancing has to account for DoT Playstyles so it doesnt go completly out of controll.
Max stack: 10
0,5% Dmg. done/stack
2% Dmg. taken/stack
5% Dmg done
20% Dmg. taken
From what i see there are maybe two different ways to look at this.
- The Stacks are capped and the growth pattern are linear.
- The Stacks are not capped and the growth patterns are exponential.
The first one is easier to balance while the second one would be, in my opinion, more fun and the players would have a higher skill cap to reach.