And even when Aizen's plans don't work, it's okay, because he planned that too.
And where did Madara's planning not make sense? : o
After the first there was what we're seeing now, seems logical, then the Uchiha massacre, alright, then waiting it out and creating akatsuki, capturing most tailed beasts, getting sasuke on his side. Doesn't seem like his planning needs any explanations, unlike Aizen's where it makes no sense so he pulls out "it was all part of my plan, mwhahaha *has yaoi love with Ichi whilst Gin watches*" ever so coincidental that the town needed to make the key was Ichi's home town, not to mention Aizen pushing Ichi every step of the way :o