My ultimate controller for Traktor FX

Couldn't you use a x-session pro on it's side, and then a nanopad/lpd 8? I know it's not an all in one DIY solution, but it's what I thought about when seeing the OP drawing.

12 pads, 4 "crossfaders", 12 knobs, and a few extras.

Something to chew on mentally at least I guess.

Do you not believe that having all of these buttons is a bit too much? How the hell do you control it all? You only have 2 hands after all and if you want to do cue juggling aswell, your stuffed!
Is it not better to be more intuitive with a smaller control surface? Traktor has many modifiers at different levels that can be used to great advantage.

I too have been pondering effects lately and have devised a solution that, while only partially implemented so far, seems like a good step forward.
Why dont you have a button that sets up your preffered effect selection to the deck currently in focus. This way, you wont need 4 knobs for each effect bank. Have this button activate a modifier too and connect all the effects, dry/wet, on/off, everything, to one knob. This leaves the other hand free for tinkering with cues . You could have multiple buttons to do a different effect combo each!
Oh, I also found it useful to have another button that sets all the effects back to their original place / decks and turns off modifiers. It could get very messy otherwise.

If I make this custom it looks like the livid instruments diy controller would have what it takes. I'm just not sure about where to get the rest of the controls. Particularly the pads/buttons since everything else I see just uses the arcade buttons. Would I just have to forget that part, and use an Akai instead?

Well it's not like I plan on modifying all 4 decks at once per say. I just want to be able to get to them instantly. Right now I have good control over 2 FX units with my LPD8. I have to switch to a different FX bank to do anything else and it drives me nuts. I just believe that there could be an advantage to having dedicated controls for all 4 decks. If you want to do something with a smaller control surface that allows you to modify a lot of things at the same time there's already stuff out there that is effective at this (IE MPD24).

As for having a reset button this can certainly work, and I even believe there's room for 4 more buttons. You'd just have to make sure you use soft takeover for the knobs.

Do you not believe that having all of these buttons is a bit too much? How the hell do you control it all? You only have 2 hands after all and if you want to do cue juggling aswell, your stuffed!
Is it not better to be more intuitive with a smaller control surface? Traktor has many modifiers at different levels that can be used to great advantage.

I too have been pondering effects lately and have devised a solution that, while only partially implemented so far, seems like a good step forward.
Why dont you have a button that sets up your preffered effect selection to the deck currently in focus. This way, you wont need 4 knobs for each effect bank. Have this button activate a modifier too and connect all the effects, dry/wet, on/off, everything, to one knob. This leaves the other hand free for tinkering with cues . You could have multiple buttons to do a different effect combo each!
Oh, I also found it useful to have another button that sets all the effects back to their original place / decks and turns off modifiers. It could get very messy otherwise.