Changing Track order in mixer vs arrangement?

Hello. I'm thinking of a way to change track order in arranger view to reverse, as upper track is always to the left in mixer. I use bass track in the left and upper voices in the rightin mixer and bass in the bottom and higher voices in the top (as a normal score would do), and current state is confusing me. One of the ways is to make separate group of tracks used exclusively for mixing (these tracks dont show up in score view), but its doubling track count + a lot of routing.
Whats your take on the issue? Esp. if you program midi and then record back.

Changing Track order in mixer vs arrangement?