The Levitical priesthood has been obsolete since ~2000 years ago. Meanwhile, every "Catholic" priesthood, as commonly understood by our definitions today, has never been part of the church to begin with. This includes the Roman Catholics and others. These priests are about as relevant to us as the priests and priesthood of Baal which Elijah confronted on Mount Carmel. They historically represent evil, wicked people who want to destroy the Bible and knowledge of it, while posing satanically as its ambassadors.
As it says in 2 Corinthians 11:13,
"For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ."
>jehovah witnesses send regular followers so is there any point in having dedicated priest class/occupation anymore?
Jehovah's Witnesses are a cult. They are run by the watchtower society who creates falsified versions of the Bible, like the New World Version.
>is there any point in having dedicated priest class/occupation anymore?
Yes because it says in Scripture that all saved people are priests and kings, and Jesus Christ is our high priest. This is core to the Gospel, the Great Commission given to the entire church, which includes every member, to reach the lost with the word of God. It is by God's word that we are born again, as Peter tells us in 1 Peter 1:23.
"Being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever."
The Lord tells us in Scripture the following:
"Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life."