@Yekaterina I think one of the benefits that the charging feature could supply would be adding depth and skill to the battle micromanagement. Do you think the charging feature (if its problems get worked out) will make ranged units obsolete, or could they become a powerful units that usually need some protection from melee attacks?
If it eventually works well, then it could certainly make melee units mega-op given the damage/speed/attack rate/ health that they currently have. Because the melee/ranged balance has been done all this time without the inclusion of a charge mechanic for melee units, that means the addition of such a feature will require a revisit of the ranged/ melee balance. I am not sure how things will go of course, but if ranged units die become obsolete from dying too fast, then I would advocate for adding some damage across the board for ranged units. My thinking is that this will make them valuable enough to make, yet vulnerable enough to melee charges to not make up the bulk of an army.
This is probably already being considered, but perhaps heavier armored units should gain less speed from walk speed to charge speed, like pikemen. Perhaps this is also a mechanic that could help make a gameplay distinction between lancer cavalry and spear cavalry.