Mortal Troops don't necessarily need to use the Rhino Troop Transports; it's just a waste. After all, the cost of a Rhino is five times that of a Walker.
The same goes for individual rocket nests. Compared to regular rocket launchers, they are larger, heavier, have a greater ammunition capacity, and include a power armor interface. Ordinary soldiers can use them, but they need to be mounted on a vehicle; and they can't fire with just a thought like the Star Warriors can, which greatly increases accuracy.
These pieces of equipment... I can't say they don't enhance the Phoenix Battle Group at all, but the actual effect is not significant.
