Thoughts on panel upgrade?

I'm hoping some of you might be kind enough to offer some perspective regarding my panel (pic he https://s29.postimg.org/qvb54ydzb/Panel_2.jpg), it's equipped with:
* Cambridge L-NAV computer with vario display, audio vario & gear warning
* Cambridge GPS-NAV flight recorder & LCD navigation display
* Sage mechanical vario

Not pictured:
* Kobo XCSoar tablet (sunlight readable black & white flight computer)
* Android tablet, running Avare, connected to Stratux for traffic & weather

I've been flying gliders one season, and managed to earn the bronze badge. I plan to start on the silver badge this spring, and hope to fly cross country. I've only used the Cambridge as a vario, and it works fine; I imagine it's navigation interface is clunky compared to my tablets. The Kobo XCSoar tablet gives lots of glider flight data, and the Android tablet also runs XCSoar, in case of a Kobo failure.

I imagine some of you have been down this road. Other than the obvious aesthetics, what's the benefit of replacing the Cambridge gear with something like an LXNAV S100?

Thanks,
Paul