That sounds pretty open-ended to me, but YMMV?
Exile, Exile, Exile.
When a game ends with a character riding off into the sunset after an adventure, free to have future adventures or encounters of vague events, that's open ended.
When a game ends with a character riding off into the sunset after an adventure, free to have future adventures or encounters of vague events, after telling the player that they will in future have had more future adventures or encounters of vague events, that's totally conclusive and not open-ended at all.
Sure, we could point out how broad epilogue slides are in practice. How Wynn and Shale going off to try and cure Shale post-DAO is a context so broad that almost anything could happen along the way, from epic adventure to interspecies lesbian tryst. We could point out that Morrigan's decisive conclusion was to be walking off into the mountains, no clue where she'd be seen next... until we got a DLC where she comes back, and we can follow her somewhere we don't even know where, with no clue where she'd be seen next. We could argue how epilogue slides that deliberately leave the majority of interpretation to head-canon and minimally restricting on future events would be considered 'open-ended' by most reasonable understandings of what 'open-ended' allows.
Or we could just accept that I am, as apparently as obviously, wrong.