I don’t mind it, but I certainly don’t have the ability to do that. I’m not sure outright black robes would be all that appropriate, though a greyish color could have been nice. Anything to distinguish it from her costume in TFA, and it would be a meeting ground between her TFA and TLJ wardrobes.
It strikes me as a huge job, though, BUT IF someone did want to go through all the work for her entire screentime across the film, I would include it. But… that’d be a huge job. So, I just say “if.” Not asking for it, but would accept it if it were to be found to exist.