Currently I am using openSUSE Leap 42.2 as base system on the laptop where I do my daily work (Dell Latitude E7470). As a YaST developer my system is a bit broken (as you may guess) and updates are not possible. So it is time to start from scratch. The idea is to adopt some user friendly system for security copies, migrate to Tumbleweed, make extensible usage of virtual machines and try to stay the base system as clean as possible.
Crystal  is a new language with a syntax heavily inspired by Ruby, but with statically type check and compiled! Its motto is "Fast as C, slick as Ruby", so good reason to start looking at it.
I would like to play with it, check the powerful of its compiler and the C-bindings mechanism to call native libraries.