Probably so although tbh DOA5 already sort of had that with certain characters xD I think if they do it in DOA6 they should make higher difficulty ones tho and make there be an incentive to do them, like maybe a trophy for each character and maybe some currency for items etc.
DOA5 had some but it was a bit bare. With 6 they could have example combos for as many situations as possible: wall hits, bounds, breakable objects, ceiling combos, slips, floor explosions, jumping over a barrier, and whatever else. And it would be for every character. There are so many things DOA6 can do. Take BB's combo challenges as an example. They have combos that start with normal hits, crouching, fatal counters, jumping, air dashing, parries, supers, etc with 3 different difficulty levels to show what can be done with the basic starters. These are viable combos and there is enough for a new person to use in different situations.
I personally don't really need the combo challenges in DOA but the one in BB helped me get into the game so it could do the same for DOA for some people.
I bought the first Under Night Inbirth for PS3 and had no idea how to play so I gave up on it and went to BB and GG. If only Under night had a combo challenge or tutorial back then...