beginner gear is expected to be improved soon, there are also thoughts of making ego monsters available in the invaded lands
however, there are no plans for any changes regarding the rest of the mentioned suggestions
this is not because we don't want to see those stuff in use again, but rather because there's no reason to mix, for example, XP quest items with materials obtainable through PvP that are used for crafting high-tier items, or to increase drop rates to make them more interesting again just for a short period of time
adding egos to almost constantly accessible zones would instantly reduce the action in events like Bifrost and RLB, while simultaneously oversaturating items obtainable through those events, thus ruining their prices
I don't have a clear picture of DMs, because to craft Valkyrie armor, you still need to farm chitin shells in order to melt them down, indicating there's still a reason to farm there, however, titan spots are mainly used for farming crafting materials for exceptional weapons, which are no longer the first option with JM and BF items now in the game, nor is chitin armor the second-best choice anymore, so maybe(?) we could come up with an idea around exceptional weapons, but a bit unclear yet