The Constitutional Validity of Administrative Tribunals

Administrative Tribunals in India have long been a contentious issue. The Fifth Schedule of the Constitution, Article 323-B, grants power to the Parliament to establish Administrative Tribunals for Civil Services. But is this a constitutional provision? Or is it a legislative power grab? I firmly believe that it's a breach of Article 14 (equality before law) and Article 323-A (Administrative Tribunals for All-India Services). By not providing equal recourse to judicial review, the Fifth Schedule effectively bypasses the doctrine of 'separation of powers' and undermines the judicial authority of High Courts and the Supreme Court. What are your views on this?