I would consume too much bandwidth listing all I don't have. But three come to mind:
A good shaper;
A scroll saw;
A better lathe.
The shaper would be nice. I currently have a Grizzly G8693 mini-shaper. It is a "mini" but is a working sucka. Amazing. But the real McCoy would be nice.
Scroll saw, I don't have because I don't want one. I inherited a very old, very large, industrial quality 24" Delta and promptly sold it. That endeavor simply does not appeal to me.
I have been singing the virtues of my $400.00 Grizzly G1067Z lathe for a long time. I still consider it one of the best dollar value lathes on the market. But, now I realize limitations of low speed and lack of power and am ready to move up. When the pocketbook is ready, I'm ready.