Let solo players use it even if they need multiple Noble Rounds beforehand. And now that we have support frame ARs, there's significantly less reason to use Lumina outside of speed runs. And frankly, I'd say every exotic hand cannon deserves a buff or two due to either disproportionately low stats compared to their archetypes like Sunshot having 60 AA while ALL other (former) 150s have 80-90. Some were indirectly nerfed multiple times over ever since they raised the health/ shield cap to 230 and that nerf was solidified when that became the base resilience. As a result, you could easily make the argument some of those nerfs and more like what they did to Thorn back when it got it's catalyst are no longer justified. If not in comparison to the archetype, the stats are often stupidly low compared to legendaries you'll see in pvp. The only one that comes close is Graviton Spike. Others are outdated even if some players might still say they're among the best, then some just have a completely useless feature. Sunshot being able to highlight enemies damaged by its explosive shots (a legendary perk) and scorch enemies when they start exploding, but everything is dying before you can get any ignitions off so the scorch is basically worthless. Or Ace of Spades (lowest of probably all 140s you'll see in AA and stability), it's catalyst just buffing Firefly which has been available on legendaries since they brought back VOG, and Memento Mori still reduces it's range and can no longer 1 crit 2 body thanks to the baseline resilience buff everyone got.