If one wants to transfer a big amount to a external recipient, it can happen that you need a lot of input-tx to fund the spending. For each input one has to do PoW so ideally your bundle is as small as possible.
I was wondering whether Flash could be of assistance here. The idea is to create a flash-channel with yourself. Then you sweep the funds from multiple addresses to 1 particular address superfast offline (all belonging to the same seed). Result is that 1 address contains at least the necessary amount. This way you can send out a small bundle where you only need 1 input (which saves unnecessary PoW).
Question: i think this sounds too good to be true but would this be possible?