I was asked my opinion on Grazul:
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I like heroes with long duration special skills ( like Ramming Pulverizer) since the computer is dumb at special skill use. Especially if using 4* ascension items.
But Devs have learned 5* with long special skills buffs/ debuffs are a problem ( see Athena the most individually nerfed hero in the game ). So long special special buffs/ debuffs are slow ( allowing them to be cleansed or overwritten) or weak ( having a small impact). As a general rule, the shorter a duration on a 5* special skill buff/ debuff, the stronger the Devs intended the buff / debuff ( millions of users may prove the Devs wrong. )
Like rumored Grimble ( anti Delilah ), Grazul is lots of what players wanted in a healer ( no more slow healers, stop turning boss monsters into heroes, titans’ one shot one kill glass cannon healers, etc. ) but those wishes are all crammed into the same hero that taken as a whole is very good in a very small niche ( anti Sand Empire hero? ).
But Very Fast makes up for a multitude of weaknesses.
According to a very good friend of mine, Grazul is not a bad hero, so players with only her will level her.
But every time you look at her role, another hero is already there.
I would call Grazul the ultimate generic attack healer. Grazul can be used anywhere a red attack healer would be used, and will be useful, just seldom super super useful.
If I got Grazul I would level her because I love healers in Empires with an irrational passion.
I also have a bad habit of falling in love with glass cannons ( Wu Kong, Melendor, Grimm, Scarlett, etc. ). Grazul is very sturdy. My roster has too many glass cannons so Grazul would balance my roster.
But like Wilbur, without Falcon, I am not sure how often I will use Grazul if the account had another good red 5* hero or red 4*+18 hero.