So I absolutely LOVE this DB. Making a more arcade-like version was something that I was attempting to do many years ago, but it never came to fruition. That being said, it feel's like the Impact roster has a couple of people who aren't there anymore. Madison Rayne, Mercedes Martinez, Madman Fulton and Don West are all under contract, while Rayne and Martinez work for AEW, I'm not sure what Fulton is doing anymore (I'm pretty sure he's not with Impact anymore), and I would either take West out of the DB or put him as inactive. I would also add Bully Ray and Yuya Uemura to the roster.
Nothing major about that, it's easily fixable for anyone wanting to play as Impact. Just something to take into consideration for a future update.