I wouldn’t call it a bug, yet I think the most important issue for DAO players which still remains unresolved after all those years. That is you cannot import to DA2 all the choices you made if your Warden died while slaying the Archdemon because in Awakening you cannot import a DAO save with a dead Warden (actually you can, your Warden just gets ressurected).
1st option: If you import your DAO save, then DA2 will feature you the default options for what happened in Awakening.
2nd option: If you import your DAOA save, then DA2 will feature you the default options for what happened in Origins.
Considering that DA2 only checks a very small number of flags for the Awakening, do you think we could get a very simple program which can manually add the few extra flags that DA2 checks for Awakening (depending on your choices) on a DAO save?