CDR runes feel awkard

Today I was fiddling with different rune builds and I realized CDR runes are very awkward if your heading towards reaching cap. Flat runes give 7.5% that does not actually help you since all items give multiples of 10%. On the other hand scaling gives you 15% with no ability to fill that last 5% unless you invest deep in to the Cunning tree. Even if you invest deep in the cunning tree you need an additional 5% CDR from somewhere to finish the 45%. I wish there was a way to use flat CDR runes or even Scaling but with the way CDR itemization and the Mastery trees they just feel so terrible. Please don't suggest running a mix of flat/scaling CDR because that actually feels even worse. The only good solution I have is run 10% from scaling and use the rest of the rune spots for something else.

Is there any plans in the near future to patch up the CDR runes? Because at the moment they just feel so terrible with the rest of the CDR itemization.