Tib 59 is over...

A lot of people play no attacks. I'm thinking firestorm 21 was to give those people a challenge.
I'm also thinking that some people want less difficult servers to badge quickly and move on to the next one. Those servers would likely have the most generic settings possible.
In any case should how long it takes to beat a server have anything to do with server frequency?

Now that the new morale server has been announced, can whoever is responsible share the date or the aprox. date of the new FG server?

They don't release data more than the next server inline.
And there is no way to know if you will get the settings you will like most.

Asked and answered by multiple people - they do not pre-announce more than 2 weeks or so in advance of the launch of a new server, no matter how many times it is requested in here!

They could, but they don't and won't. They give the standard announcement around 2 weeks before a world is launched.

It's not difficult, it's their policy or method of working.