We have too many guys fighting for taken spots. Mushfiq, Nasir, Shakib, and Riyad have 4-7 locked down. Naeem may or may not be able to hold his position, but he's not a terrible option either way. Gazi I think can bat well enough to be considered a prospective all rounder. He could easily be a guy who can average 20-25 in both formats.
I think Abul is being exposed for the ordinary bowler that he is and I don't think he can replicate his batting form either. Anamul will take one of the opener/one-down slots. Meaning we need a #3 batsman. Marshal, Mehrab, Ashraful, and maybe some others seem to be in contention for that.
Cricket cannot live with the mistaken belief that people want to see big hits. People like to see goals, but no one is talking of moving the goalposts a metre wider either side. (Harsha Bhogle)