Hi Matt
There is merit to what you are thinking ...... particularly for hardbodies . I've had a go at a crazy cranker & I found it was nice as the amount of line recovery during a twitch suited my normal technique ...... I didn't try it with a plastic but I could imagine that the slower speed would be nice for rolling plastics.
Now the negatives are burning a plastic on touchdown but the biggy is when a barra charges towards you and you need to recover line quickly ...... that becomes tougher with a lower speed reel.
In the end , I stuck with 6.3:1 ratios as for me - it was easier to wind slower / than faster ....... particularly on the quick burn - and then the issue of line recovery on a hooked fish ( there are times when I've wished that I was using a spin reel:rolleyes
Chris