Castles in Blue, Cities in Yellow, Temples in Green - Possible Province Splits in Orange and in Red
The Meander Valley and the sorrounding areas definetely seems like a priority to me. Phokaea would also help portray the border between the Aydinids and the Saruhanids more accurately. And by separating Laodikeia from both the Meander and Tabai, i would be able to portray the Inanjid Beylik that was a vassal of the Germiyanids, and controlled the area between 1261-1368. So i would say that i consider all 3, to be a priority actually
Nikaea:
Paphlagonia: Kastamonu, Dadybra, Pompeiopolis
Amastris: Amastris, Ionopolis, Parthenios, Kotyron
Gangra: Gangra, Tosya/Dokeia
Herakleia: Herakleia, Tion, Prousias
Vithynion: Modrene, Flaviopolis/Krateia, Klaudiopolis Possible Additional Baronies: Adrianopolis
Ankyra: Ankyra, Anastasiopolis, Iuliopolis/Basilaion Possible Additional Baronies: Balbadona, Akarbous, Hagios Agapetos
Adramyttion: Adramyttion, Pergamon, Antandros, Pitane
Smyrna: Smyrna, Nymphaion, Phokaia, Magnesia, Erythrai, Neaphokaia, Neonteichos, Klazomeanai, Tios Possible Province Splits: Phokaia - Smyrna
Ephesos: Ephesos, Miletos, Lebedos, Tralleis, Melanoudion, Herakleia Latmos, Priene Sampson
Laodikeia: Chonai, Laodikeia, Kibyra, Tabai, Antioch on the Meander, Stauropolis, Attouda, Harpasa Possible Province Splits: Maiander - Laodikeia - Tabai
Philadelpheia: Sardeis, Philadelpheia, Pyrgion, Tripolis on the Meander, Nysa, Thyraia Possible Additional Baronies: Hypaipa, Koula
Thyateira: Thyateira, Khliara, Kalamos Possible Additional Baronies: Plateia Petra
Nikaea: Malagina, Nikaea, Basilinopolis, Pylai, Kios, Leukai, Angelokomis
Prusa: Lopadion, Prusa, Miletopolis, Apameia, Apollonia, Adrianoi
Akhyraous: Poimanenos, Akhyraous, Synaos, Pegadia, Lentiana, Adrianeia
Sangarios: Kibaia, Thebasion, Bilekomis Possible Additional Baronies: Pithekas
Dorylaion: Dorylaion, Kotyaion, Nakoleia, Midaion Possible Additional Baronies: Santabaris
Nikomedia: Nikomedeia, Prainetos, Daphnousia, Kibotos, Tarsia, Niketiata, Charax
Chrysopolis: Chrysopolis, Chalkedon, Hieria, Kartalimen
Lykia: Myra, Telmissos/Makri, Patara, Phaselis Possible Additional Baronies: Talamani/Dalaman
Mylasa: Halikarnassos, Mylasa, Knidos, Strobilos
Attaleia: Attaleia, Kalonoros, Alara, Syllaion, Aspendos, Perge, Side Possible Additional Baronies: Isinda
Rhodos: Rhodos, Kos, Lindos, Karpathos
POSSIBLE NEW PROVINCES:
Phokaia: Phokaia (Smyrna), Neaphokaia (Smyrna), Neonteichos (Smyrna), Magnesia (Smyrna)
Maiander: Nysa (Philadelpheia), Antioch on the Meander (Laodikeia), Harpasa (Laodikeia), Stauropolis (Laodikeia), Tripolis on the Meander (Laodikeia)
Tabai: Tabai (Laodikeia), Kibyra (Laodikeia)