FASTER COMBAT. LOL
We had to go from Fastest to Medium in WPL1 because the combat was too fast.
The flag timer for Warband was identical to the flag timer for Bannerlord for well over 60% of warbands lifetime. Actually it may have been faster. On many Warband maps you could hardly run from your spawn to any of the flags before the flag timer popped. River Village is prime example.
Bannerlord combat is tuned to be boring. Shields have immaculate health, as well as immaculate coverage in melee. Block delay removes potential for exciting clutches. Crackshot archers have been neutered by a horrendous cone of fire and a simplification of aiming. Movement speed makes fights sluggish and swing delay removes aggressiveness. Javelins are so mandatory and easy to use that for infantry it is often beneficial to be in melee as infrequently as possible. You say two simultaneous teamfights are a big deal as if split pushes were not a thing in warband. Split pushing was even better in warband because you had more bodies to send in different directions. 8v8 will always give a team more movement and composition options than 6v6.