The only thing that they would need to do to make a third season with Lelouch is to change their minds about him being dead (and take the shitstorm for trolling people). Lelouch is dead because they guy/s who made the series said so, not because of what happened in the anime.
Hypothetical question: What if they made a new season of Code Geass that simply redid R2 and acted like the original R2 didn't happen? To go further, "What if Lelouch was never captured at the end of the original Code Geass?"
If this happen the story will have a different direction.
perhaps another diffrent ending
If I recall, the writer for Code Grass never wanted R2 to play out the way it did. It makes me curious about what R2 could have been. If you want a big 'what if' try this on for size; "What if Lelouch had never been expelled from Britannia?".
No! Better! What if Suzaku was given the Geass instead of Lelouch?
Hypothetical question: What if they made a new season of Code Geass that simply redid R2 and acted like the original R2 didn't happen? To go further, "What if Lelouch was never captured at the end of the original Code Geass?"
If this happen the story will have a different direction.
perhaps another diffrent ending
If I recall, the writer for Code Grass never wanted R2 to play out the way it did. It makes me curious about what R2 could have been. If you want a big 'what if' try this on for size; "What if Lelouch had never been expelled from Britannia?".
No! Better! What if Suzaku was given the Geass instead of Lelouch?