The ability to control volume level and tone in the drive circuit independently is what sets the Legacy's implementation apart from others I've used, and gives it a much broader range of use cases. In contrast, for example, my Tonehammer pedal results in a huge volume increase when the drive (I think they call it gain on the pedal) circuit is switched in, limiting its usefulness as an effect to be used in a specific song section, or even between songs.
+1
I'm able to go from a warmer, mild gain boost to a pretty full-on distortion with quick twist of the drive knob on the Legacy.
However, it's usually set straight up and I sometimes dial back on the passive bass volume to reduce gain.
Fortunately these Legacy heads have the headroom to make those adjustments.
if had had money, tell you what I'd do…
Keep my 1x12 combo for pub and polite gigs. Keep my extra 1x12 speaker for an outdoor stack.
Buy a 1x15 combo for my fender P. Buy 2x10 for the funky 5 string.
And hopefully they come out with a 10 for the upright!