Although the idea and or script have been languishing for years (along with various directors who were said to be attached, as well), i think a well scripted remake of
Creature From the Black Lagoon, with limited, yet effective CGI for the creature's face, could do really well. Nothing can take the place of the original, but a more flushed out story and more realistic looking creature, i think, would do quite well at the BO.
Just DON'T make it into another teen-based flick, with the typical 4 couples camping down at some lake for the weekend.......