The amount of cluster bombs you could take would definitely have to be limited, even if the servers and engine could handle a load of them.
As for their implementation, having them just be an AoE would be preferable over having them be purely random as they would naturally be due to how they work until later variants with guided sub munitions, however balancing that AoE effect properly would be pretty hard.
As you kind of implied yourself, being the one using them would definitely be fun, but being on the receiving end is the opposite, especially if they end up involving a lot of randomness (bomblet spread, fragment dispersion, wonky overpressure)
We have received rank VIII and are probably going to rank IX within the next two years, yet we haven’t received global RP reductions for all techtrees for rank VIII yet.
When will this happen, since grinding vehicles from rank VII and VIII is abysmal due to the amount of them (for most nations, not all).