Which race will have runes? – Runes would suit the Lizardfolk well – like the Lizardmen and their tablets from Total War: Warhammer 2.
There is also a vampire model – you could make a Landsknecht on a vampire – a vampire is essentially a human, and the plate armor is too low and stocky compared to the others – in my opinion, if you want to perfect everything, it’s better not to make humans shorter, but rather larger – but this is not certain – you still need to compare. You can make Einherjar based on the Warlords. If not Landsknechts, then Justiciars (elite melee unit for humans – in other parts of Heroes, the analogues were Crusaders) can be made based on vampires.
By the way, a ballista with a gnome will look cool. It seems that in Listmore, the ruling elite are gnome merchants, and the orcs and humans live in slums. You can make ballistas, referencing this city.
Justiciars are associated with me with the Griffin Empire; it’s better to leave this for NCF.
There is also an idea for the Lizardfolk Castle – basilisks look weak. You could try making a rider on a Triceratops. I was inspired by Warhammer, after reading a little about their version of Lizardfolk; this creature will be based on the bear rider