I have heard rumours of a DBE 2. Not sure if sequel or reboot but i'm sure it could. This trailer was pretty sweet for a low budget project:
Saiyan Saga would be interesting. The main thing they need to do is:
*Use Asian actors (Justin Chatwin alienated a lot of people). Concept:
*Use well known martial artists /Pro Wrestlers with an acting background. I know I said use Asians but Goldberg would be the perfect Nappa. For Goku/Vegeta use martial artists with either a legit background or experience in action movies
*Stick to the plot
*Change the costumes, but not too much
If they could do it for Western Comics like The Mask,Spiderman,X Men,Avengers,etc. why not DBZ?