Studying Daito-ryu and using the solo work I learned from the Aunkai have both completely changed my aikido. Right now I'm trying to find a balance in the dojo between doing things in the "classical form" but with internal mechanics and aiki versus giving time for my structure to "free play" in response to incoming force.
The challenge is finding how internal aiki can be maintained during aikido(TM, haha) movements. With my rudimentary understanding of internal movement and DR Aiki it can be fairly difficult...I assume it's not a fruitless endeavor considering the movements themselves were codified by an internally-trained DR man in the first place (Ueshiba-sensei!)