It would be interesting to see a Luchs with a dedicated ATGM turret......
Recently I came across
this.
I like the idea of a quad TOW or Hellfire launcher (since I don't know if there is actually space within the Luchs for a meaningful missile reload, 'might as well carry as many missiles at ready as possible); the RIwP carries two but is armed with a co-axial machinegun, offering some degree of protection against, say, enemy infantry at close range.
For systems that are available earlier, maybe ZT3 Ingwe triple launcher or UTM-800 HOT turret......