Jim,
-dunno what tubes you have in there, but, this head does respond to tube rolling, unlike my experience with swr, eden, and even the M6 and M9 Mesa's.
-you could try white out to fill the dots on the knobs.
-yeah, i get the headroom thing. i really do. this is why i really like this head with multiple cabs. it's easy to add enough cones to make it plenty loud. and, it really does seem to fill a mix well with less watts, somehow. i particularly love the sweet top end with my more aggressive active basses, like the Sadowskys.
-the headcase isn't that heavy, and i like it. it's not a 2.5lb microhead, and it's sure lighter than lots of things. even in the headcase, it's an easy one handed carry, and much nicer than my old WT800B+tuner in a 3 space rack, and really seems to outperform that head. the mesa bag is nice, but a snug fit, and the head has to come out. so, while i do have the mesa bag, i use it for charts and cables and my tuner, and use the headcase for the amp.