Yes to marching Peninsular British, BUT once they had marched to the battlefield, lets have them holding their ground defending at the ready, firing volleys when the French columns came into range and then advancing/attacking when they had stopped the columns and had them routed!!!!
Those kind of sets (defending/at ready), (firing) & (advancing/attacking) are also needed for the rest of the nations. The 1815 British line still need firing and defending/at ready sets.
In fact Strelets were getting the right sort of format with their ACW range, Yes marching and standing about. But also sets firing, at the ready/defending or holding the line to give it another name, & of course advancing/attacking, some sets of which have been done for some of the Napoleonic nations already.
Its a format which was a good idea for the ACW range, & would lend itself perfectly for the Napoleonic era too.