An army list I can relate too!
I like the termies to all be champs and more lightning claws. That would be 6 attacks on the charge, more than some characters!!
I like the Defilers, both because they add good long range firepower with some cc goodness as well.
The vindicator is decent but with 90% of your army taking it forward, its limited range could mean dropping that str10 ap1 blast marker on your own precious troops. If you still wanted fire power, trade the vindicare for a pred for more accurate and lng range fire.
Otherwise nice list, fits well within Khornate lists.
Angron would approve.