Yeah, that part's pretty tricky. The fact is if that you overshoot or undershoot the turn just enough to throw you off course, you'd be completly screwed. Doesn't help that all the Flight characters control like an airplane (down/back = up, forward/up = down) and you're in a hurry. Plus you gotta keep in mind the momentum factor.
And I do remember Yuda making that announcement, but that sounded like him jumping the gun just to keep the public interested in the game. Of course, if the game IS in development, I better see 3 things happen (!!WARNING!!Long rant ahead!!WARNING!!):
1. No more 'character types'. It's one thing when it's that character's overall top attribute. It's another when it actually limites the character to what trick paths he/she can actually take. I don't like the idea of buying a certian Gear just to be able to get Tails or Wave to grind on a rail when all the Gears should be able to do it.
2. More control over tricks. PERIOD. Flicking the thumbpad around was no different than mashing D-Pad arrows and three buttons ala 'Tony Hawk's Whatever Skater Insert Number or Name Here'. The difference was that the later made you actually earn those combo lines. Instead of that, I would like to play the next Riders and make it remind me of SSX - fluent control and precise movement to where if you landed on that board, you better be right-side-up and clean on the landing or you'll eat it. How bad depends on how much you put yourself off-axis.
3. Ditch the courses, open up the city. JSRF would be the shining crown for this rule (RIP Smilebit). Even if parts of the city were so big and expansive that you could easily get lost in them, the sensation of tricking from street, to rail, to streetlamp, to roof, to wire, to finally skyscraper all in one line was more than enough to make up for the time you spent looking for that one spot to get-up on. Put the same expansivness in Riders, and the only thing you have to worry about 'getting up' on would be how high you can get up into the atmosphere before gravity took over.
Races wouldn't be a problem for this either, since JSR always laid out your race course for you. That way, you knew where you had to go and what shortcuts you're allowed to take before you strayed off course.
All the other bones I had to pick with the 1st Riders I could care less about (music, interactivity, replay value, etc.), but if those three aren't fixed when the sequal does drop, I know where to turn for my 'action sports' fix.