I think I read somewhere that the ignition switch / key is not centered, as part of the overall asymmetry. If so, I don't think a genuinely symmetrical solution is possible, though a "more symmetrical" solution may be.
As an aside, I have mixed feelings about the Tripper based on limited usage experience to date. On the one hand it's quite functionally limited (mostly due to an extremely primitive app), compared to, say, a Beeline 2. OTOH:
1) it does get the job done;
2) especially when using the spoken audio directions (including supplemental info such as street names) in addition to the visual display. (My helmet has Bluetooth speakers paired to my phone.)
#2 is a real deal-saver. I don't think I'd ever get a system that didn't have that.