Same here. I learned how to do a setup by watching Marcelo Feldman's video, and that's how he does it as well:
Indeed it is the most important how it feels to your fingers and hands. After years you can do it by eye. However what I like of measurements is that if you own several basses all of them will feel the same. In particular if you use the same strings.
Completely agree with you on that, I have a process I go through on all of mine and varies a bit by type of bridge/saddles and neck type, radius, ramp system etc. (e.g.- Maruszczyk, Mayones, Warwick, Status and all my headless). I can do it so quickly by look, feel and sound that gauges are in the way and only would approximate what’s needed… My action is also super low on all instruments and with as much as I play I’m always adjusting something and don’t even think about it.
I watched marcelo's video because doing things by feel vs measurement speaks to me (besides, the kit I ordered won't be here for 5 days anyway). I figured f*ck it, the truss rod doesn't need "measured" to do it, so just get on with it.
Despite the zero fret I used a large capo pick which was actually a largish plastic wedge used to pry/hold open laptop cases when cracking them open. It looked exactly like a capo pick so I figured why not. Worked fine.
I actually did three 1/4 turns for a total of a 3/4 turn. This got me right almost exactly where I needed it to be.
Lowered all saddles. The E, A and G were perfect; the D string seemed just a touch lower in volume than the rest. However, the D couldn't be lowered any more as it had bottomed out (I now now what that means!). But to be honest, I'm a little too lazy to raise the other 3 to get them all to match. And it's very, very slight and when playing normally/dynamically it's nearly impossible to tell. I'm leaving as-is.
Only two strings needed intonated. The G and the A. This is where the fun/PITA started for me. At first, having a small alan screw on the front of the saddle seemed brilliant; in practice, it was frustrating as hell because it's black and hard to see and very small/awkward. Maybe if I had the hands of a japanese school girl and wasn't over-caffeinated it wouldn't have been so hard. When it *was* loosened, it seemed very hard to slide even with the string seriously detuned; sometimes it moved just a smidge (just enough), other times it moved too much, requiring me to detune and start it all over again. Regardless, with tone being obvious, I can see why people make a big deal about bridges and ease of adjustment. It wasn't unbearably difficult, just more finicky than it needed to be (could be lack of user experience, too).
So there's good news and bad news...
Along with the above, I adjusted the pickup height. The pickups had already seemed too high, and since I adjusted the relief and lowered the action I figured I'd lower them. Overall, they're better balanced (less boomy) and definitely doesn't overdrive/flub out my amp. Win. But my main issue was the weird overtone/harmonic tail I was hearing at the end of a note. It's still there unfortunately. I don't know if it's a weird vibration/resonance with the tuners and/or bridge or perhaps it's the chambering of the bass, I can't tell. Maybe even the strings. The weird ringing is there active and passive, series single or parallel in either pup, in both my amp and my DAW. My right hand muting technique is pretty solid, and I tend to play staccato a lot so it's pretty easy to mask.
The good news -- the bass plays much, MUCH better! I think I could've gotten away with just the truss rod adjustment and the minor intonation. Etudes/exercises/runs feel so much better.
Takeaway -- adjusting by feel was pretty much a breeze. I knew the tuners were crap from day one, and now I want to replace the bridge. I will probably replace the bridge and tuners over the next few months.