That's sad, to be honest. I imagine the development schedule must be always tight and your teams should be busy implementing different content into the game, but I really hope Archaeology won't be treated as a dead skill (max it, forget it) but rather as a questline (always releasing new content). Overlapping content, such as releasing digsites with levels too close to one another, isn't a bad thing in this situation - to be honest, I for one believe players would love having different options of where to level without necessarily having to worry about efficiency.
Say, if you released a Fremennik digsite, based on scandinavian culture, at the same level bracket as Warforge!, giving about the same xp/artefact, people would likely alternate between digsites for a change of atmosphere, or to complete different collections.
If we had a Serenist digsite, tolkien-ish elven or even celtic to an extent, at around the same level as deep Kharid-et, you could even make a link between both digsites and their respective cultures.
A Forinthry digsite at the deep wilderness could help us know more about the people who once lived there. Mysteries could lead to ruins unexplored, lore untold. You could simply base them off any other cultures - even off the medieval tone - and we would totally buy that. They were humans, after all.
Anyways, this is just some brainstorm to point out what the skill CAN be. It's absolutely full of potential, and those (many!!) among us who love lore content and universal expansion would certainly LOVE it. Hope you guys at Jagex give it some thought.