I still think they'll add Aranea playable viacharacter swap regardless if its wasn't explicite in the new roadmap.
Perhaps when Episode: Aranea comes out, they could put her in the Character Swap every time she joins our party. What I mainly want from free updates are bug fixes, perhaps a Hard Mode, more weapons if possible, and more lore on Solheim, but that's debate-table, even though there's plenty of it so far. Most of my main priorities for the story of this game on the gaps I wanted filled and delved into were filled/are being filled through Updates/DLCs so far, with a following list.:
Ifrit's Betrayal (Chapter 12 1.16 Update.)
Solheim (Glimpse of Solheim in Chapter 12, and Royal Pack DLC added Omega, a Magitek Armor made by Solheim, as well as adding more lore about Solheim for the Data-Log.)
Revamped Final Battle/Revamped Chapter 14 (Royal Pack DLC.)
Chapter 9's Altissia Invasion (Episode: Ignis.)
World of Ruin (Comrades)
Seeing more of Ravus (Chapter 13 Verse Two and Episode: Ignis.)
Ardyn's Past 2,000 Years Ago (Episode: Ardyn.)
The Fall of The Niflheim Empire (Episode: Aranea.)
Seeing More Of Aranea (Episode: Aranea.)
I know I said the second half was where the game's story fell apart for me, but thanks to the additions they've added in regards to the subjects I have put up above, which I see vital to the story, I'm going to say that the story may end up being complete for me depending on how Ardyn and Aranea's Episodes go, even if we don't get an expanded Cartanica, which I am sad about, but I am willing to see past it as long as Ardyn and Aranea's Episodes are great or decent, and it's been a long road for FFXV, and I am looking forward to it's conclusion.