Bit dust frequency (drop rate% in chests, loot and legendary blueprints) is way lower than what it should be for anyone spending at least 3 hours/day on the game, and the endless research requires way too many bit dusts to unlock higher levels (i.e. 30 days of farming = 900 total hours = +-150/200 bit dusts = 2 or 3 lvl 20 research upgrades = not fun).
Decreasing the rarity of bit dusts (from legendary to epic or very rare), decreasing the amount needed for endless research and increasing the drop rate% significantly, I think are all steps needed so that the game can be more rewarding and can completed more quickly, and so it does not become merely playing out custom maps to gain green papers to get orange chests to collect bit dusts...
Thanks for the attention