I left my old club, where i'd grown up, and all my mates played and an awesome social side, to a new team, higher league higher standard. batted in top 4 at old club, now im at 8 at new club, but keep to much better bowlers and better wickets. and my batting has improved massively.
It depends on what you want, why do you play? for the social with your mates, or are you more serious, wanting to push on and play as high as possible. if so, like me, then move, if it doesnt work out then you can always go back. you'l never know unless you give it a shot, hopefully your old club will understand
I haven't looked back since i moved loving every minute of it, well settled and had success