My understanding is that romhackers don't want to add an AP patch to avoid legal troubles. However, you can hack the game to add AP yourself. I used this forum thread to do it myself. FAST6191's posts, especially his third post, was very helpful.
[URL unfurl="true"]https://gbatemp.net/threads/zelda-spirit-tracks-using-ap-patch-and-d-pad-patch-at-the-same-time.536974/[/URL]
