The word you're looking for is "intercessor".
Nothing in Scripture spells out the duties of an elder within the assembly. It spells out his qualifications, but doesn't tell you what he does. You're assuming that what your church calls an "elder" is what an "elder" was in the First Century church; that is, you're setting your own tradition up as judge and jury.
It might make more sense to actually go back to First C. Christian writings and let them tell you.
What you'll find -- summarizing -- is that "elders" report back to the "overseer" (bishop) and preside over the Sunday Eucharistic assembly, which is uniformly described as a "sacrifice".
Your move if you wish, but to me and mine: checkmate.
Well, no, an elder is a bishop. Their duties are not that terribly huge but are described withing their qualifications. They teach and they lead. There is no Ecumenical(sp) service and the very thought of not having that totally confuses an RC who just wants more. My Son in Law to be is a good example.
Sorry I confused my non-biblical terms. I ment there is no liturgical service.