I mean, Guihun makes him strong and fast, but considering that Raian is handling it just fine with his skills and without using removal, it makes Alan seem incredibly unskilled. Another issue is that it makes it seem like Alan is going all out from the start.
He should have more in store, but I'm very doubtful about the usefulness of being a "reincarnation" of Wu Hei. For all of that, he's still just a puppet at Edward's beck and call. Alan has also kept his name and does not go by Wu Hei so aside from having a living autobiography, I really don't understand the purpose. Getting back to the main point, it's hard to see Alan as having more in store when Raian is already being distracted by something else.
It does seem like the Worm's head is trying to perfect this "reincarnation" through clones. An odd delusion to be certain.