I can not understand why only RTW comes in for abuse when considering unit speed. STW/MI was too fast but nobody goes on and on about that. I have played MP RTW battles that have lasted over an hour. I have played MP MTW battles that lasted less than 10 minutes. The combat phase is governed by many things other than movement speed.
I found unit speeds (walking/running) less than perfect in MTW, cav appeared to be running but getting nowhere, many times an arbalest unit would manage to escape light cav.
Lack of control and limited space in RTW is possibly governed by the AI habit of stretching its units into one wide line.
Deployment zones have always been arranged far too close so manoeuvre is of secondary importance and that horrible red zone is a wonderful flank protector.

A few map extras would significantly improve battles. Surprise features like marshy ground etc, things that prevent units working at optimum levels, realistic and IMO it would add more drama to the battlefield

......Orda