Bloodmage - Sunder the flesh (spellcrit-node)

So, another spell got his base-crit-chance raised to 15%...

I was so disappointed by the ascendency I gave u my witch for a while.
And I did it again, as I realised, that almost all of the bone-spells have a base-crit of 15%.

What is this stupid ascendency worth???

I know, ranting about it will result in GGG nerfing all the base-spell-crits, but to realise, there was another useless node on the bloodmage-tree frustrated me beyond reason.

Why is this ascendency intentionally garbage???