Career Evolution Contract Pack
The smart contract pack that fixes many of the issues in stock career mission progression.
I only play Career mode in KSP because I need to have a direction, a mission, a plan. The contracts give me something to do so I can plan my missions around them. However, I have not played stock career mode since my first career. Thanks to @nightingale and his Contract Configurator mod, I haven't had to. There are amazing mod packs created by @nightingale, @severed