The best Hybrid DK skill build?

yes. gobies will always be a useful money map. you cant rush gobies effectively.
i cant quite remember but if you max spear fury you can probably 2hko a goby. its much faster than 2 crushers to be rid of the things and the range makes it ridiculously easy to hit all 6.
but outside of gobies... it aint so great.

as for blood, you can show that maxing it decimates the meso cost of having a 12 att buff at the price of dispellability.

and finally, i have a low opinion of sacrifice and a high opinion of endure.

Does it matter if I'm hybrid though? I'd think that 1hkoing gobies would be of higher priority than 1hkoing bone fish.

Blood I might get just for how neat it looks and so I don't need to carry around pots all the time.

Sacrifice I sort of agree with you about.