my 2 cents : please kill the light-show and music while moving letters effects. I think you want your users to be able to concentrate. Unless this effect is there to make this game harder for some reason ?
Hmm, the light show is meant to highlight the sector boundaries, so it's clear where a given letter tile can be dragged. I could tone it down if it's too much, my goal was to give it some personality.
Regarding the sound, if you don't care for it, there is a volume slider in the menu that can disable it.
