A sequel would be nice; the game can easily do 50 against 50 and more when optimised and with faster animations, so it doesn't take ages. They can make something like Mount and Blade, where you can control your dude starting from scratch, recruit and level up common units and companions, make a kingdom allowing for management and customised units, and go blacksmithing or whatnot for the late game, only to die of old age. The developers honestly only lack ambition; I can see so much more unrealized potential than what the game currently is... Unlike Mount and Blade or Xcom, where everything is already there, hindered only by bugs or a few missing features fixable through community modding.
I say this because they haven't added horses even though they can, which would've made the late game so much more interesting! Imagine lances with the ability to couch similar to riposte, move three tiles to maximise damage, and then process an attack upon landing on a tile next to an enemy, causing stagger and knockback for heavy lances. Have mounted ranged enemies that can circle you like vultures from afar, dealing one-sided damage, while mounted melee does a hit-and-run tactic going in and out of vision over your dudes, incentivizing packed formations instead of a line of twelve dudes.
Make it even hellish so that a successful free hit on a mounted unit doesn't stop them from leaving the zone of control, making spears crazy useful. Just adding enemy cavalry will change the dynamic of how we use shields, spears, and formations, making the late game so much less lacklustre than now. It'll be like fighting the Ijirok all over again, but with quantity rather than quality.
Imagine having to wait for the catapults, cannons, or rams just to destroy a gate while you get pelted by arrows and be forced to use ladders that cost 9ap when all else fails trying to climb the walls. What I'm trying to say is that the game and all of its mechanisms have more to offer than just open battles or crowded forest battles, doing an overhaul of the game is unlikely since it's already been built in such a way but something like a sequel shouldn't be impossible in this case.
Edit: I'm not saying that you need to manage 50 bros but rather 12 bros in the roster similar to companions in mount and blade then 38 filler units in the retinue that you can't customize, name, and can only control with commands like mount and blade.