Dark SRs are actually pretty solid, and dark SSRs are definitely an upgrade to their SRs. The problem is that other elements have some pretty OP himes or have good synergy and dark just doesn't have much going for it in comparison:
- Fire can dish out unrivaled dmg without relying on debuffs from himes like Uriel and Svarog - nothing in dark can even come close to their dmg output
- Thunder doesn't have as many team-wide buffs but their individual buffs tend to be very strong and hits very hard and also have access to rare skills like paralyze if you paratrain for UE. With Dian Cecht, they also have heal covered now (thunder is by far my worst element btw, so my description probably doesn't do it justice; thunder mains, please correct me if I messed up)
- Wind has lots of DATA and BG and Gaia AW is also there if you can't just overpower the enemies. Oh, and when Azazel's AW comes, she will literally turn the entire wind team into Azazel clones with all her buffs; one Azazel may seem kinda meh, but 5 Azazels that still have all the abilities of your standard wind team...
- Light covers all utility skills, and also has insane synergy between its himes that allow it to burst at ridiculous speed and hit ridiculously hard
- Even water, which no one seems particularly fond of has more DATA than dark and it has lots of utility skills that dark lacks
Dark currently just feels slow and unremarkable compared to what others have and not a lot of excitement in the future - Thanatos gets an AW, which seems pretty decent and I think Osiris gets buffed later with a taunt that makes her more Berith-like, but still not the kinda brokenness we see with the other teams.
Can you do well with a dark team? Yes, certainly, but if you've played another element before and try dark, it just feels kinda meh...
We play what the gacha gives us though, so if you only have dark, use dark, it's still better than full SR team of another element. But if you have a choice, usually ppl migrate away from dark.
Yes, AQ = Accessory Quest. The number denotes its lvl, 1 being the easiest, 5 being the hardest (until AQ6 and AQ7 arrive.)By AQ5 you mean accessory quest? Also what is this SR disaster grid?
SR disaster weapons are the ones that drop from disaster raids - the ones that you spend AP to host and BP to join. Since you can host 3 new raids of every type everyday and the number of raids you can join is only limited by the amount of seeds you are willing to burn, it is a renewable source of SR weapons, so you can have full MLB SR weapons by just farming raids. Gacha luck not required at all.
Also, I think it's important to stress that MLB SR weapons have better stats than LB0 and comparable/slightly better than LB1 SSR weapons. So unless you really need the skills from your single copy of SSR weapon (usually 'cos it has both assault and defender), you are much better off using MLB SR than LB0 SSR. Which is why standard beginner advice is to get a full grid of SR disaster weapons as it is completely free while having respectable strength.