Oh yeah i can see that point!
I tried to giving ultimates more stronger effects like double activations, extra hits or powerful buffs debuffs to make them more useful. I also tried to counter act this by making ultimate level bonuses more powerful. A damage skill gets +5% dmg per level. Ultimate skills gets +10% dmg per level. Maybe increasing it to +15% or +20% per level could solve this?
What do you think?