@ Zelekendel : we tinkered with that one too, and it was part of the alternative Dwarfslayers rules, to move a random distance forward.
Remember there will be a natural reluctance to move towards the enemy (or rather death and mutilation) for the most part of your troops! That said, the suggestion is a good one. I assume you make the move a mandatory FULL movement distance?
alternativly, and making this a tad more challenging
adjust the move with minus 1d6 for each turn they use it in..... and for brigades, nominate the first unit you want to move before rolling the modifier... This will reflect the hesitance of the troops, and make it slightly more challenging when eg. you infantry surges forward while the flanking cavalry lags behind.