Can LUNA return to its previous position? Can it reach up to $100 again? And how reasonable it is to invest in LUNA now?
I would categorically state no, anyone still investing in this project does so at his or her own risk, isn't it pretty obvious that all of these attempt by the Luna team to try and save the coin is going to be more or less futile/fruitless. Investors on this project would be considerably low at the moment, for obvious reasons actually, thus how is the coin going to pump/rise again when demand is going to be at its lowest.
Having said that, people should understand that the root of the problem is not just Luna, but altcoins, and what happened to Luna could and in the future can happen to any altcoin, majority of altcoins are short term/pump and dump coins that have no real utility, other than hype and fake promises backing them up, sooner or later such coins are bound to lose their hype and dump out of the market. The thing is, investors should never forget to take altcoins as short term projects, meaning once you make profits, you pull out, do not hold, doing so would only accrue you losses in the long run.