It becomes a problem because the lord's parties get much bigger, everybody has 130 to 260 troops, making battles even bigger and even more tedious
It was on a 1.8 save that I no longer have (deleted everything do to crashes), had Rhotae, Amitatys and Jalmarys, all of which I garrisoned with vlandian sharpshooters and sturgian heavy axemens, while my party was almost pure fian champions. It was lategame and the cities were between 5k and 7k of prosperity, at most 7.2k before starvation
Well there is a reason why PC users hate when the game has to be cross platform, same thing happened to skyrim where console compatibility meant the game was very limited, hence the different worldspace for cities. A lot of bannerlord's issues can be tied to console compatibility
if armies are smaller than less villages to recruit from is not an issue. If a kingdom can muster 5 2k+ troops armies when the game can at most render one thousand troops on the screen then maybe the armies are too numerous/too big
Like I said; I prefer it bigger, especially by late game, because it adds to the challenge and prevents me from just steamrolling everything. If you're finding the bigger battles tedious, then I'd say the issue for you would have to be too fundamental for mere numeric adjustments to fix or you just got bored due to repetition. I'd lose out if they made enemies even smaller and less likely to have top tier troops because I'd greatly appreciate a maintained or greater level of tactical challenge during the late game.
As far as I know, that's basically high to very development so it stands to reason they'd be able to keep you in the black.
I'd say Skyrim's fundamental issues is less to do with compromises for consoles and more to do with design philosophy. Nothing fundamentally changes if horses are slowed down, there's less clothing to wear, or towns are interior cells but a whole lot does change when spellmakers are removed, levitation is removed, dungeons are homogenized and mostly linear, etc. and I'd apply it likewise to Bannerlord; any shortcomings you find with Bannerlord are mostly going to be issues with the design rather than its technical performance. Like, if Bannerlord were made with PS1 era graphics (etc.) but otherwise kept the same in function, would that really change anything beyond how it looks (and make loading times much faster, presumably)? Whereas, if they cut features or didn't implement this or that because they wanted it to be different (for some reason or another), would it matter if they were in (insert most technically demanding thing at the moment)?
I actually think it's better that battles happen in multiple waves. The fact you can get away with mostly Fians whereas I can't on PS4 implies that the balance resultant from having to fight multiple waves (with only a third of the non-PS4 troop limit) implies battles are actually more demanding and sophisticated when such limitations are in place. It'd be great if you (or other non-PS4 users) could use a slider or something to determine rendering limits just to experiment with this theory of mine. It certainly would explain the discrepancy between my own anecdotes and others around here besides skill issues (i.e., I'm a newb or they're extremely good) or exaggerations.
I agree, the only way to even get away from just the menu-town-after-town-travelling 'waste of time' between the battles is through a core gameplay change with complexities and better random variables, which won't happen (massive DLC-like change would be needed).
Personally? I'd rather they make it more "about menus" since just about every strategy game I've played that operates on a level above tactical is basically a series of menu flips on a superficial level. Any changes along the lines of more scheming, plotting, domestics, etc. is basically stat management and menu flipping. I can't say I'd dislike that when what I'm suggesting is basically to go into menus to do things you can't currently do lol.
I don't think being able to wander around open spaces outside of battles adds anything to the gameplay experience. As beautiful as the cities and villages are in this game, they don't actually add anything outside of their use in battles. This isn't TES where you have to run around numerous shops to trade goods, repair gear, rest at the inn, etc.; this is more like RTK where you traverse an overworld and conduct business on a political/military level with the occasional personal when not conducting invasions or defenses. Yet, for some reason, a lot of love and care was put into designing these places even though you only have a practical reason to see them during battles. And, given the core of the game and where I'd like it to go, I can't say I have any ideas on what these beautiful places could be good for besides some light dating simulation elements or "family events" and the like. There's just no good reason to not do everything not related to battles in menus besides posing or looking cool in peaceful areas.
EDIT: I am curious what the intended design philosophy is going forward, because I suspect many M&B fans have divergent ideas on where the series should go and even its fundamental identity. I view it as a grand strategy game with RPG/action elements, for example, and therefore think mainly about expanding it as a strategy game.