Batch was a fair term to use for how Invention was released, and how things like Prifddinas and the Arc were handled, but Archaeology is not a batched release. Orthen was never a 'batch 2'/something missing from the initial release, but rather just additional content we've talked about adding later (as it is dependent on something else happening first). Just wanted to be clear about that.
That said, if players want to see more content released for Archaeology, such as additional dig sites, a new training method, a D&D, more relics, etc, the best thing to do is make it clearly heard that's what you'd like to see.
Make posts about where you would like to see new dig sites, that give your ideas for new relic powers, etc. I, for one, would love to see all of this new content added to Archaeology, an Orthen dig site included, and I hope you all agree. :)