Luckily I write quite well (if I do say so myself) and when I published the dissertation I changed everything to how I wanted it--Maisonettes, active verbs, and all.
My supervisor excised several of my pet expressions from my diss, and ever since I've been promising myself that when I write The Book, back in they go.
Funny about the active/passive divide; maybe it's discipline-specific, but I was told ever since I started grad school to avoid the passive voice as much as is humanly possible. I'm now positively allergic to it - can't blame you, anthroid, for taking it back out again.