That's why she is low on damage and speed... Next year she will be better.
But at the moment with my current team I don't really need her even after her upgrade.
Maybe I will switch between Dark Amaterasu and Amon U, if I have her but I won't waste a miracle ticket for Amon U.
But for the others she will be awesome and a lot better than now.
That's the long term plan.
At the moment I just need Pluto and if I have enough luck with jewel gatcha or premium ticket I will work on my other grids and Himes.
However my dark grid is composed of 7 SR Assault (most of them from Dark Disaster Raid), 1 SR Defender and 2 SSR Kamihime Weapons.
I reach 106% Assault and 27% defender (32% with Bastet). But the next Dark Event's are months away >.<
The thing is that my only SSR Himes besides dark is Gaia.
Therefore it will depend what SSR Himes I will get till the next miracle ticket.
My light Team is a little bit odd I have Belebog and Diana. Most of the time I will use Dark Amaterasu for each element and run Cassiopeia/Andromeda.
Well, I hope I will get Sol or another core SSR light Hime because like you said it will be a pain in the ass to run off-element each time especially in tower.
I will try to get every usefull SSR Weapon and some SR Assault Weapon for each element from every event.
About Pluto:
Well, I just wanted to say that she is really awesome and I don't think I will replace her until DMM release a better SSR Dark Hime than her. But then she would get a Awakening later xP
Here 100% burst increase: (google translator translate 100% to 1%... lol)
Bear also confirmed that it is a +100% burst increase for each lego stack. So, yes her burst will be amazing
Furthermore she is not only a tank also a damage dealer. She also offers 50% damage increase for your entire dark team (20% A-frame attack up and with lego stack 30% dark attack up)
I also love Pluto's design. I am not really a fan for Lolis but I love her character design.