Went back and read your first post....
I don't want to mess up the majority of games for the small minority that support rotary controls.
Yet you're willing to do it for spinners, tron stick, and dedicated 4way?
I bet for half the budget you could so a 4P pedestal with Trackball support that will suffice for 96% of everything you and your friends will play. I say play but they'd probably spend most of the time navigating what will undoubtedly be a unweildly gameslist. Od course I know that at 37 I will never have three (let alone 5) of my friends over at once unless it's my kid having a sleepover or something but I'm not starting that argument with you.
I know you said you're doing this and you don't want any of this type of feedback, but what you're saying doesn't make any sense to me.
I can respect people calling it ugly, especially at a DYI forum, but there are no forums for people who buy units like this, plenty of people referred me to people that would be better than this large sellers, but no one was able to present themselves in a professional manner, price lists, options, quotes in a reasonable time, couldn't offer safe shipping, warranty, phone support, references, portfolio of past builds, proven build designs among other things, I can't design a system, I wouldn't even try, I can't even design art work, I have 0 aritistic ability, I need a complete turn key solution.
I have 4 young kids, most people wouldn't agree with that either and I wouldn't recommend it

This thing will get more family use than you can imagine, and I also own all the current gen systems with 4 controls and I can tell you that I hate them, aside from Mario Kart on the Wii U, the games just aren't fun, too heavy on the graphics and nothing on the gameplay, the gameplay on arcades from the late 80s and 90s is what made me a gamer for life and that's all I did back then, it was all about getting to the arcade with my friends, and I still have those same key friends that are waiting to come over, except now none of us smoke and there will be no cigarette burns or seedy characters wanting to talk to me or asking me how old I am or if I like to get high

It's funny, because I look back now and the arcades that used to exist in my city (Montreal) were all also accompanied by xxx video booths, imagine today hearing about something that attracts children in the same establishment that hosts men jerkin it in a small booth in the same vicinity as to where your kids are playing, my how things have changed.
In terms of space, I can only do this one cabinet, it's not going to happen again, it just isn't feasible. So I know it could be considered fugly, but feedback like badmouth gave is exactly what I was looking for, I would have wanted to kill myself on the angled sticks, and I so so appreciate getting that feedback, unlike Kaneda, nothing has been built, I have nothing to re-do, I'm taking the time to make the best out of this type of design.