I agree totally. I couldn't get really happy with the sonic character of the preamp so I decided to remove it from both my 4 and 5-er. Now I run them passive with a serial/parallel/single coil switch and I love the big throaty growly sound I can get out of them. Indeed perfect in the mix.I just love this Dimension bass... it has a great maple neck, low action, if anything the neck should have a little more relief, but that is a quick fix. Had to get used to the sound and plays with the mids totally rolled off most of the time, yet no loss of harmonics. What is important is that it sits just right in a live mix - the growl does the trick. Also lowered the pickup a little more on the B side than the G. Only issue for me personally was that the G string could not be lowered enough to my liking for slapping/plucking. So a little minor filing of the G string saddle fixed that in a jiffy.
I also encountered the high G string issue on the 5-er. I measured the thickness of the neck heel at the G side at 23mm, whereas 25mm is more usual. This does not combine well with the thickness of bridge. I considered shimming the neck or replacing the bridge. Never thought of filing the saddle
. Certainly going to try that. Thanks.