Tornado and FGS needs to have reduced CD in PVE

Right now, Tornado has 150 seconds cd in PVE.Conjure Fiery Greatsword has 180 seconds cd in PVE.

For tornado, even PVP version has 90 seconds cd. (Which were 60 seconds earlier but nerfed) Why should it have 150 seconds in PVE? It is a nice defensive skill when under massive pressure in open world. But right now its cd is too long to be useful.

I will not talk more about FGS as tons of people has mentioned it over and over again.

Also a side question.. Anyone can tell me what is the use of "Conjure Flame Axe"? Rarely see any people use it.