Where are you thinking of using her?

I use Duchess on my Brutal Hydra Team.  I will attempt to build Mavara in a reasonably fast 9 pcs Protection set (if I have the DE accessories) and swap her in for Duchees.  She will keep the Perfect Veil up more consistently than Duchess, plus she offers the Fervor.  I don't need the Inc Atk from Duchess because Mikage is on that team as well.

I will also give her a run in PVP.  I buck the Meta a bit by still running a High Res Tank in quite a few 3v3 Offense scenarios.  I tpyically use a Res Aura for that, but if Mavara is sufficiently fast, I can use her speed aura and if I get the Inc Res Buff up right away, that is quite a bit better than the Res Aura.

IMO, an overlooked part of her kit is the passive TM Boost that she brings. Having her on the team is like having everyone in 4 pcs Supersonic, and I'd predict that she becomes a Meta pick against the buffers. I see a lot fewer Duchess picks in the supersonic era, but I still see Siphi picked in LA a few times every day.  

Definitely makes sense if youre gonna use her.  Guess it'll depend on what the event is. 

BEWARE! Fusion go'ers,  

I made the mistake of empowering one of the epics. The epic doesn't show the fusion symbol in the empowerment page which i left feedback on to improve. But It has ruined my fusion event and Plarium of course isn't aware of the issue on that page and is sitting on hands after reporting. 

Support team seem to be chat bots with automated responses. Or people that dont want to improve on systems, Player experiences as a game grows.

Hopefully the support team will help you out.  

@WileyMan 

Not even a chance. The Support team was not around to give any support on actions like this. Not even Case by case.  

got the "this is our final response on the matter" 

Sorry to hear that.  Maybe if you try again after the weekend?  Use lots of pleases & thank yous.  

I thought support was often helpful when people make mistakes that mess up a fusion they have been actively pursuing. 

defiantly will continue to try Monday. Have been showering them in comments like that "would mean the world" etc.  But they've been reluctant like its coming out ones pocket book or something.