I think I can share some of my suggestions. I feel that this website is already pretty good and it could improve even more if it gets
Reputation added to the user profiles (receiving points for questioning and answering like it is done in Stack Exchange) - to motivate the questioners and the answerers.
Answers ordered by number of points (also like Stack Exchange) - so that the users may find the best answer more quickly.
Differentiation between answers and comments (like Stack Exchange).
LaTeX writting support - to write math (such as Fluid Dynamics equations ).
Button to put text in code format (not everyone knows that text between "`" symbols is put in code format).