First off, I've got nothing but admiration for that Angron!

It's a superb piece of painting and I find that the blood is not overdone in the least - as many have said - this is Angron

. And, whilst i'm not a massive fan of the level of
OSL on the Tau, aside from that (which is just a matter of personal taste - certainly not your painting skills), it's another excellent model. Both the Tau and Angron are,
IMO, stunning and put my painting to shame. Great work mate.
@cerbrus2 - I'm guessing the reason
FW include the
SM casualties are for them to either be painted up a loyalists from the Legions that did not rebel, or, as shown on the
FW site and in the
OP's model, as Loyalists from the traitor legions. In this case, it appears that Angron is dispatching a loyalist World Eater and some Loyalist Death Guard.