This is mostly a tip for lower-rated players who keep complaining about sig spam:
There is a big difference between mindless sig spamming and using sigs smartly.
I’m a katars main, and sometimes I play Queen Nai in 2s. I’m completely horrible with spear, and I would never pick Queen Nai for her stats alone. But her sigs are literally what make the character work, and everyone knows that.
For example, her spear dsig is amazing for taking stage control, which is exactly what you want. The key is not just throwing sigs out randomly, it's using them with a purpose. A good sig can force movement, punish predictable approaches, cover space, and make your opponent respect your threat range.
That is why “sig spam” becomes so effective against lower-ranked players. A lot of the time, they are not actually losing because sigs are broken, they are losing because they keep trying to do the same thing over and over without adapting. If someone keeps hitting you with the same sig, at some point the problem is not only their move choice. It is that you are letting them get away with it.
So yeah, sigs can be annoying. But that does not mean they are cheap or useless. They are part of the game, and learning how to deal with them is part of getting better.