I don't think that Putin ever wanted to reform Russian political or economic system.
Why?
Now he have absolute power in Russia and can do whatever he want.
His biggest failure?
In my opinion conflict he caused in Ukraine, and all bad results Russia received from it, including trade lost with EU.
Because of Putin all former Easter block (Poland, Ukraine etc) demanding that Nato soldiers came in their countries and protect them from Russia.
It's big strategic mistake because Russia lost their influence in this area.