It's a long process, first we need old ppl to come back to make all those items available, and then we need new players to come aswell because there would be more items floating the markets.

But it's hard for someone new to start out unless there is gear for them to buy at a resonable price early on. If they start with no gear no1 will take them into climbs etc.
Making muting available for everone def helps, will be interesting to see what price essences land on as a price.
I doubt magicals would sell for alot, but mystical++ will def go for alot more.

You will have no problem selling essences of high enough tiers.