There is nothing immersive about grinding things.
Because after your first or second playthrough, that's what it all boils down to, grinding. The breath of freshness is already gone, and you want to be on your way to leading armies and spanking kings. Dragging out the early game only benefits new players, while everyone else has to slog through it.
Bannerlord as a game is way too barren and thin on interesting choices to be called immersive, it is a linear road to more troops, more money, bigger numbers. Making this road longer does not really benefit anyone, if it boils down to repeating the same things more times.