Definitely. Really trying to avoid big pedals anymore. I have one that's still on my board, and that's enough. MXR sized boxes are big enough in most cases. I've seen enough reductions of bigger pedals to know that it can be done, so why they're not doing it, I don't know.I have the MXR BCD and do experience the signal boosting issue. As you mentioned, it is pretty minor, but in certain tunes I've found it to push my signal just enough, especially if combined with some sort of distortion, that I jump out of the mix more than I would like. I try to simply play with a lighter touch in those instances and that does the trick. I hate the flanger and X-over functions on that pedal. The flanger sounds cheesy, and the X-over basically makes the chorus sound too subtle to be heard in a mix. Good pedal, but not a great pedal.
I tried an Iron Ether Polytope, but I couldn't get along with it. Much better for whacky sounds than traditional ones. It could do them, but I thought my MXR did them better.
My absolute favorite is the Tech 21 Bass Boost Chorus. It sounds FABULOUS. It's probably too big of a pedal for your needs, which would rule it out.
Have to disagree about the flanger in the BCD, though. Didn't care for it at fast speeds, but slow it down and it becomes a little glitchy in a way I find very cool.