Thank you, mb22! I was going to reference the character Novice Hame from the Doctor Who episodes "New Earth" and "Gridlock", but I see you did the leg work by presenting some fabulous shots of the character, the actress behind the makeup and the appliance itself. The Sister of Plenitude were one of the first feline designs for a television series (as opposed to a major motion picture) that had "hair" covering the entire piece. Usually, "fur" is merely "implied" by the use of patterned grease-paint.
Incidentally, the Plentitude" appliances were "single use" elements. They were so delicate that the process of removal at the end of the day's shooting damaged them beyond the possibility of reuse. But that limitatuon was not, er, limited to the furred facial appliances. I learned the newest Davros makeup is equally fragile. New pieces had to be ready every morning for Julian Bleach to wear. Factoring that, I suspect most to the elaborate prosthesis castings for "Nu Who" are equally delicate. It could be that's simply the norm. Greater detail for today's image recording equipment, but durability must be sacrificed as a result.
The point is, a believable M'Ress can be done now, even upon television. Some have stated she could only be realized through CGI. Personally, I don't think so. Novice Hame demonstrates the facial makeup complete with fur can be done. The choice of costume could aleviate several of the problems; long sleeves and trouser legs would negate the need for body fur. The tail? I've seen fan constructions that can sway in a rather believale fashion, without the need for motorized or cabled mechanisms. That could be used in full body shots. A cable controlled limb could be used when the actress is sitting or reclining. Digitigrade feet? Again, I've seen so-called "home grown" solutions that are quite believable. If a fan can engineer something in a garage, surely a professional production can design something similar. Or, if not "footwear", clever editing using close-ups and the occasional "composite" shot can be used with animatronic, puppeteered feet.
It really comes down to the time and budget willing to be used to create such a character, but the solutions exist.
Sincerely,
Bill