The Mod team clearly indicated in several recent direct and private communication channels Mevans did not explicitely approve of creation of just any mod using the LOTRmod. As explained elsewhere, you need to get explicit approval by Mevans to consider any publicly shared mod based on or derived from the LOTRmod 'approved by the author of the LOTRmod'.
This matter is not just merely about legalness of acts and produce but foremost deals with decency.
I strongly recommend everyone to minimise any discussion on this matter and postpone any activity regarding creation of modified versions of the LOTRmod as long as the Mod Team or Mevans himself have not made very explicit and clear statements regarding this issue, or unless they have explicit approval of Mevans to create their product for not-exclusively-private use.