Even competent teamwork has its limits, and 'no plan survives contact with the enemy'.
Musket-armed light infantry can engage almost any force on the field, with or without assistance, assuming that they are competent and are allowed to be nearly as independent as light infantry historically was. Rifle-armed light infantry is another matter. They can engage targets at a longer distance, but they also have to depend upon someone else, or upon specific formations (Two ranks facing the cavalry, anyone? I've used it to great effect.) in order to see off cavalry that may pose a hazard to the light troops.
In short, musket-armed troops can move farther away from their team, hold positions, and take part in charges. Rifle-armed troops are useful for long-range engagements, and covering their own troops against enemy lines, but have to remain closer to their team in case they are engaged in melee by.. in all honesty, anything that outnumbers or has a longer reach than them..
Most, if not all, of what I've said has been covered here, but I discovered this too late to make any real difference.