We have a lion heart bowler in the name of Robiul. Im glad we found him as he reminds me off Peter Siddle (bowls with a lot of heart). We need to persist with Nazmul. He hits the line and lengths consistently which Bangladesh need. Taskin is the one to look out for. I think those 3 are the future.
Also i'd try out Ziaur Rahman as a specialist bowler for ODIs.