well , this is telling you that you really need this antiskid system ...
Disregarding the fault at planning stage is just against EU-ops; but again, you may operate on a set of regulations that allows you to disregard the fault.
MEL are there to help the operator to move the aircraft out of remote towards a maintenance facility; there was ( and still is) a lot of abuse of MEL, commercial pressure and so on.
But if the manufacturer is telling you that 14000 ft is required.....( factored i understood) for landing... worth considering fixing the problem, or indeed your destinations are scarced..