I must admit that it was your name as the author that made me click on the link after all - I knew it would be good. No worries - I'm guessing this pairing kept a lot of people away. I'm hoping that, like you, a few more who wouldn't have considered it might give it a go when they see it's me. :-)
So, thank you for paying me the compliment of trusting that it wouldn't be awful. :-) I'm glad you came and glad you enjoyed it.
I'm not a big fan of Death Eaters (except for our dear Severus, of course, who really is a former DE, after all), but it seems to me that there is very little incentive for anyone outside of the pure-blood elite to have thrown in their lot with him. Since we know that Dolohov was not part of the upper echelon, and since we are given the aside in the final battle of Flitwick being the one who takes down Dolohov, plus the fact that Filius is conspicuously absent from the ranks of the Order, made me see a story between them.