I will say, I am actually pretty happy with my cabinet. My original plans involved something closer to a Frankenpanel and I originally was gonna have a horizontal monitor.
But some things forced a chance of plans. My original build with the horiz. monitor proved too big to fit the one place I could put it. So after first throwing in the towel and planning on giving up, I ended up regrouping and working on version 2.0 (really more like 5.

. I ended up with Vertical Retrace. I found compromise to bring about the best of everything. The 27" vertical monitor still plays horizontals at about 20".
I was also limited in cp space so I compromised on 4 buttons per player (set in a diamond shape). This limits me to not be able to play the street fighter series but I'm cool with that. I could have possibly went with 3 buttons per player but I like the Neo Geo fighters and there are a couple of other games where I use the diamond layout.
Also people come over and they wanna play golden tee but my cab is just not well suited for it. I don't mind playing it with control but most people I know do that stupid flying hand thing.
To me, it seems like some people get so carried away wanting to play everything, that they end up with something that isn't really much fun at all.
The things I'm really trying to tweak on my cab right now is just simply making my front end look a little nicer than the current Mala with game launcher theme and I'm continually racking my brain on getting better and tighter 4 way action on my right joystick.
I'm toying with having a round gate and extending the shaft and maybe having a second 4-way gate pull in when needed. I just am not completely happy with 4-way on any switchable stick.
Some day, I just gotta make room and build a dedicated 4-way vertical cab.