I think the devs should add counters and playstyle tips to the existing ones. For example, a new player is fighting Lennox. He doesn’t have the DLC, so he doesn’t have access to her tutorial. Unless someone tells her that she builds up damage multipliers with consecutive hits, she will have no idea why her health is melting so fast. So this new player gets unnecessarily punished for not knowing something that isn’t all that obvious. I think that telling people what they’re going up against and how to counter it would be an easy way to relieve frustration for new players.
In the extras menu I believe all the tutorials for every character is there, even the advanced ones. If they don’t know there they could look up gameplay on YouTube or whatever to find out what each character does. There are lots of options for people to find out the kit of each character. I don’t see the problem.