Some Suggestions for changes to everyone's favorite (or not) Cryptarch:
1) Allow players to buy Legendary Shards with Dark Fragments, Phantasmal Fragments, and Herealways Pieces (just as we can currently buy Glimmer). While not the most thrilling change for developed player accounts with thousands of Legendary Shards it would be helpful to new players as well as players who focus lots of Seasonal and Iron Banner Weapons (50 per seasonal weapon focus and 100 per Iron Banner Weapon focus). Since Rahool has now taken over Spider's position as the Tower's material exchange vendor it would only make sense that he could sell Legendary Shards in some capacity since they were a potential trade with Spider.
2) Allow players to focus basic Foundries Weapons (Hakke, Viest, Omolon, and Suros) with Rahool. I know this feature is currently available from the Season of Plunder Starmap on the Helm, but its just that. Come Lightfall we can expect a total reset and clean sweep of the Helm, meaning that this feature won't be available forever. Many of these basic foundry weapons like Funnelweb and Krait (to name a few) are top teir in their classes and Basic Umbral Focusing makes these decent weapons easily accessible to new and og players alike.
3) Finally (and this might be a stretch) but could we possibly flesh out Rahool as a full fledged rank-able vendor. Making him akin to Zavala, Shax, Drifter, and Banshee. Giving him his own reward milestones and rank resets. Decoding engrams, buying materials, and focusing umbral engrams with him would raise your rank, offering bonus powerful engrams and perhaps other rewards like discounts on materials.
What do you guys think?