Dares of Eternity released in December 2021, so it is three and a half years old at this point, with the last update adding craftable weapons during Witch Queen. Even though it was an Anniversary pack addition for the extended interim between the end of Beyond Light and Witch Queen, it was a fun activity that was enjoyable for multiple years past. Sadly, with so long without an update it has gotten stale, so it would be nice to see new maps added to it, or different routes. However, I would be afraid that Bungie would add more of their horrible new enemies such as the Lucent Hive and Dread which are just a pain to fight, not to mention their terrible updates to the Taken and Scorn. Adding the ability to focus or outright purchase older weapons and armor for collections would be welcome, as you mentioned and certainly a step in the right direction.

Make it up to 12 player. It's a silly game mode, turn the silly up to 11 (or in this case 12).

I honestly think they need to add a chest for each encounter that exclusively drops weapons and armor that appear that week or add another chest to the vendor so we can randomly buy those weapons and armor.