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Now, read your post carefully again. You're all in some kind of daze. You read, but you don't understand what you've read. Is Vidomina with advanced necromancy no longer a necromancy specialist? :D What's the difference between k=20 and k=30?
Don't you understand anything? Take a calculator and calculate how many skeletons will be raised when Vidomina is level 10 with an advanced skill and an expert skill. I got 30% and 45%.
What about you?????
The difference will be more than 10% at any level, judging by the formula, even at level 1.