Is it just me or are they very much ignoring anything PG has come up with? It's like their games might as well not exist or anything they came up with within them.
Is there really anything in Platinum's games that would bring something new and worthwhile to the series? Dodge Offset and Wicked Weaves wouldn't function all that well outside of Bayonetta's focus on preset combos, and the Devil Bringer / Quicksilver mechanics which already exist in the series are far more elegant implementations of in-battle QTEs and a time-slowing mechanism compared to Zandatsu and Witch/Hero Time. The MGR / Bayonetta parry input could be incorporated as a weaker alternative to Royal Guard, but it still might not organically complement the rest of the combat design; especially with DMC4's less aggressive enemies. And taking any more inspiration from PG's notoriously terrible minigames would be a less-than-commendable idea, especially since the dice sections of 4 were one of the most common complaints.
...maybe the manual sprint option in 4SE could vaguely be construed as something added in the wake of Beast Within and Ninja Run, but it's most likely a coincidence, due to being a fairly basic and obvious change.