Neo Tokyo Bosses' droprates

Hello, I run Neo Tokyo bosses (I mean Vergamot, Dunas, Nibergen and Nameless Magic Monster as a whole) almost daily with squads I personally helped to get through these tedious Prequests. It seems as both the squads and individuals actually running these bosses and Neo Tokyo region as a whole just keep on dwindling.
The main reason for that is very obvious.
Each Neo Tokyo boss requires you to go through a series of its own prequests in order to run it (each prequest takes approx. 1hour to 2hours), just to spend at least 30minutes in to get a Crystal most cases. (Regardless to mention that Dunas' exp rate is just awkward but I guess it's Vanilla.)
The aim of this thread is to raise awareness from ML Staff for the alarming rate of drops of Neo Tokyo bosses that directly decreases the amount of people actually running it.
It saddens me to review the hype created initially by Staff Members when that above mentioned region was introduced just to see that it has no basis now.
Please make the alterations you see fit to balance these bosses to other ML bosses, so we could enjoy these more. (Having 4 bosses to run each twice/day is a great get along! But time spent vs. efficiency ratio just drives to smack these bosses much less!)
Thank you!
I attached a screen shots taken at the end of select boss (Dunas) as proof of what I aim to stress out in this thread. (And these were rather good drops.)