I'd consider taking off the model badges but i'd leave the volvo badge, as it would look smarter with the brand badge only, similar to the bmw/mercedes option. Removing the brand badging reminds me too much of those corsas/puntos i see with a blank back end with a noisy bean tin.
I had to remove the badges from the back of my 900, but it was due to the loss of the silvering making them look scruffy. (i don't miss them much now)