It would be nice if they were reworked some day. Maybe make the bomb-pumped laser warheads a missile type on their own (like buoys, drones, etc) so that you can make them a sub-munition and thus set their separation (aka firing) range. Then you could also customise their size and power. Their range would be based on what level of the tech you have (soft x-ray, x-ray, etc), significantly reduced from what you can achieve with a ship-borne laser, it wouldn't make much sense if these things could hit further than the PD lasers built to intercept them...
There are a few questions, though. If they are to use the laser damage template, should they also use (miniaturised) beam-weapon fire controls? Would those need to be built into the laser submunition? How would damage be worked out? Presumably the laser damage derives from the space allocated and your warhead damage-per-msp tech, as the nuke is the power source. But not the same as devoting the space to a normal warhead, or with the laser damage template they'd obsolete normal missiles entirely.
Ideally you'd get a situation where you could detonate your laser submunitions out in the 20-100kkm range to avoid enemy beam PD, for the tradeoff of reduced damage (because of the falloff on lasers). Or you could detonate a big laser submunition right up in your enemy's face, at 10kkm, to try to pierce through heavy armour. You'd penetrate more layers that way, but you'd do less total damage than using a conventional missile. It would be tactically interesting. Although having to create different missile designs for different separation ranges would hamper how easily you could recalibrate to match an enemy's PD.