More so than RuneScape gold deadman or ironman mode. It's like the polar opposite of the current game. I don't believe the OSRS team is willing to make these drastic changes to an already bloated economy, it would be very tough to make it appeal to the community. That's why it deserves its own server.
As a secondary server with few worlds it would be easy to notice botters. Jagex would have to place extra emphasis on bot detection in this area since it would impact the game more. You would think no real person would mine pure essence.
Not enough players are willing to mine pure essence then a PvM drop could be introduced that gives skillers increased gathering rates. Like a special pickaxe that mines essence every tick, or a special runecrafting pouch only removable at the bank like a looting bag.
Be careful of scams, there are plenty of top 10 scams on OSRS Gold youtube for runescape, personally if you watch twitch don't click the double xp weekend streams in the runescape section!Have fun, it's a grind but you can have such a good time playing runescape, I watch films when training certain skills,