I would use a 3-way toggle switch for the NFB. Off, standard value and something inbetween. Sometimes off can be a little bit too much and the standard value not enough.
I'm one of those who changed the slope to 68k. I like it that way. Don't know why a toggle wouldn't work, but I don't know much about amps. I let a friend do all the modding. (Though I was with him and know exactly what he has done.)
Half Power Switch is not necessary in my opinion.

So this could be the reason, why I like my amp now really much with the 68k slope. It's really full sounding.

Multiple Amp setup is my guess... Everytime I play through 2 or more amps at once at quite high volume it's a pretty thick sound. At rehearsal I always played through my OTS and an old Echolette Leslie; now a Fender Twin and the Leslie (don't have to carry the twin ). The sound is huge. Maybe the different frequencies compliment each other or something like that, I don't know.

Another thing: Ika suggested the 470pf setting for JM sound. And this setting is also pretty thick. Not as fat as with the missing NFB though.

Edit: Okay, I just noticed I didn't answer the question at all xD Okay, next try: Maybe it's just the style... If he'd just play powerchords with that thick sound it could be problematic? I also don't see the guitar as a part of the whole mix with the most older songs (WTLI), it's more above all other instruments like a lead singer. Hope you get what I'm meaning...

I saw Mark Knopfler live in 2010 and his sound was even huger. But again it was more like a lead singer and not a part of the background music. I think it also has alot to do with volume...

Yup, Jazz setting without cranked bass just sounded like... well, s***. Absolutely unusable. I still like the rock setting better, but now I see it usable.
To the bass: I tested it in a small room with cranked volume, so that could be the reason, why I'm hearing so much bass. Also the amp is standing right on the floor. But with 3 NFB settings, I guess I'll have the right thing for every situation

Whoops, just realised I answered in the wrong thread Well, you found it anyway...

Don't know exactly what you mean with what gave the most touch response or compression? The LNFB settings? Hard to tell... if I had to say something about that I would say without LNFB ist the most touch responsive. But that could just be imagination due to more bass, mids and little bit more volume?

I play the same style as you, I guess. Inspired by John Mayer, SRV, Robben Ford, etc. (Fingerpicking and bluesy stuff).

I have to add, that I didn't test the amp in band setting yet. But alone in my room with gig volume (Hell, that was loud!) I could imagine the bass player doesn't like all the bass the lifted LNFB gives The 470pF is a little bit milder, but still an improvement over the stock setting with a singlecoil guitar.

What's interesting is that the Jazz setting got useful for me the very first time with the lifted NFB

Okay, tested it and I still have NO idea what difference the slope did. The lifted NFB adds extremely much bass, cool for tele bridge PU, not so for neck PU. I prefer the 470pf setting. This is a good inbetween sound.

Oh... you're right Totally forgot about that, cause I never switched it on again 
I'll see if I can trust my memory enough to make out the difference... The only thing I can say atm is, that I didn't get a significant increase in bloom. (Maybe a strat is the wrong guitar for that anyway... I'll try it with an ES-335 )
Well, I think if I use the settings I always did before the mod and still have more bass and low mids, we know what the slope resistor did.

I would say, just try it out. I like the 68k resistor, although I don't know if the difference I hear is the resistor or the LNFB... Anyways, it was an easy mod. We just snipped the old resistor and didn't have to get the turret board out. If you do it, make sure you record soundclips of both variants

Easy decision: 2 Ceriatones

I'm interested in this, too. I did the 68k slope pickmaster mod and my amp is now quite bassy, although I thought it was the lifted LNFB who caused that. What exactly do the different slope values to the sound?

Thanks for the answer. Yes, I think I don't need it, too.My amp has enough bass already :-)

We did some of the mods now:
- LNFB 3-way switch
- 12- way rotary
- 68pF bright cap
- midboost cap changed
- 68k slope resistor

We left snubber caps, bass pot capacitor and everything else alone for now.
I like the results so far. No negative Feedback does a nice thing to the clean sound with a strat, though it's quite bassy now and less trebly. It's good that we made it switchable, because I like those glassy/trebly cleans sometimes

What exactly does removing the bass pot cap to the sound?

yeah, I thought something like that But I think you can hear the goods of your amp

How did you record?

Really nice demo!! I'll be happy if my amp sounds like this after the mods Nice version of payphone, too.