Here's what I think would help the mavs next season:
get a sound sg who can guard good from the draft(1 st round)
get a front court player with maturity to use in 2 seasons like Boone (Uconn)
Keith Van horn
Try to sign :
free agent scorers who can play D like Tim Thomas to replace KVH
See what Rawlee Marshall can do on the court
Try and trade Damp as his value should have increased after the finals and clear cap room.