Some questions: 
  
1) will some DS locations & dungeons be revisited? 
2) will some enemies of DS be reused (e.g. Seck spiders) 
3) will lore books be scattered across the world?  
4) will the lore further expand the history of Azunai, Xeria & Zaramoth? 
5) will dryads, half-giants, Elves be playable characters? 
6) will certain combat skills from DS2 be reused?