definitely send it to us. it's not a waste - this is what we're here for.
and yes, we do respond to every email, and if for some reason you don't get a response, you are more than welcome to follow up. you took the time to write to us; we will take the time to read what you wrote and respond (and yeah, "we" is
usually Keyvias...he doesn't mind, I promise!). don't worry about length; we'd rather your voice be heard than not. and by all means, we want to make sure you get what you signed up for when you backed our kickstarter. you bought the game and supported us, and this is the least we can do in return.
don't hesitate!