I THINK if you just make your custom sort rule to be nothing more than track # ascending, then title ascending, it should work and not mess up albums that have multiple artists like shown in your screenshot.That will disintegrate pretty much all albums and sort everything by track number.
Using: 'Album Artist/ Album/ Disc#/ Track/ Title' might work better though.
Added Disc# to the equation to prevent this from happening:
Smart. That'll do it! Well, at least there was a possibility to sort things the way I wanted, it just was more complex than I thought because it allowed for some pretty extremely in depth and customizable routines. Works great for my stuff, hopefully yours too now!