Okay, I think I know where you're at then. All of the arts attacks have the same inputs, but you still have to buy the hyper arts. At the very least, you don't need to play the game a bunch of times to "open up paths" just to get the final abilities, lol.
I'm glad to hear it's hitting all the right buttons for you too! I tried keeping it as close as I could, though I did have to take advantage of newer technologies, such as with the menus. If you're familiar with the Super Arts training hut from the original, that's been repurposed as well with some neat features. The story has been touched up a bit, and there are actual multiple endings rather than just continuing on with the one like the original, so have fun finding them!
And, no, I didn't include those hidden inputs. I thought about it, but I wanted to keep the control scheme as simple/generic as possible. Originally I was thinking I'd add controller support if it was requested, but as you can see you're the first person in 4 years that's commented so this project hasn't seen much updates, lol.