Originally Posted by Taon

It's typically more like 2.5% per skillbloom, but you're looking at this the wrong way; it's about the overall increase in DPS or in some cases, even self-healing.

Take a look at the recently bloomable Kerria's skill:

At level 1, it's a 26% chance of triggering, at level 5 it's 36%. This is a jump from a 1:4 chance to proc to a 1:3 which is a 38% increased chance to proc and coupled with the life drain, this is a massive increase in Kerria's overall fighting capability.

And this isn't even taking skill chance trigger buffs from other girls that might be in the squad into account which just makes those numbers even higher. Skillblooms are, enhancement for enhancement, worth more than any other enhancing unit (including dressblooms) which is why they're not typically paywalled.

The only advantage dressblooms have over skillblooms is for increasing TP for units that aren't likely to see combat (i.e. Whaleship).

to add onto that, if you have girls that increase skill chance, then that makes it more worthwhile for the skillblooms...

consider Kerria's lv5 skill with my team's total of 1.6 times skill rate... that takes her 36% chance and makes it 57.6% chance to activate... but if left at lv1, it'd make a 26% chance become 41.6%...

that's quite a noticeable difference...