Well done on finding new Barnacles in another nebula @chuci !
I passed by there earlier this week and found no UAs or Barnacles, so I am disappointed that I failed to find what was there but glad that there was something to find!
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There are plenty of other nebulae in the vicinity of Barnard's Loop and some, like the Cone Nebula, are now completely inaccessible, even though people had passed through them before 2.1. Which other nebulae do people think might be worth a look? I visited the Seagull Nebula back in 2.0 to test out my Asp Explorer in its Distant Worlds loadout and found no sign of a UA shell there, nor any sign of Barnacles on the ground but perhaps it might be worth checking again. What about the Jellyfish and Rosette Nebulae, or is that too far?
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I am quite interested as to whether there is anything else other than UAs and Barnacles in the game at present. Given the amount of work that went into the Engineers' bases and the number of those, it would not be impossible for FD to have dropped a base or two of the Missing/Barnacle-builders/Thargoids on a planetary surface somewhere. The question that would give rise to is: would we be able to see them simply from a detailed surface scan of the host body, or would we have to get close enough to visually sight them?