We ought to get on the phone with Sony and fix that.
Turning WipEout into an eSport would more than likely necessitate many aspects of the game to be reworked if you wanted to keep from completely alienating casual players and creating a toxic online community.
Allow me to direct you to Extra Credits and Design Club, two very handy shows on YouTube that can prove to be very helpful for those going into game development. You could also take a look at The Act Man's channel, because he often explains a lot of things about different games turning into eSports (such as Halo 5), and if you asked him about the WipEout series, he might actually provide some useful feedback.
That doesn't make any sense, though; Spectators shouldn't be sending any data to the race, only receiving from it. You wouldn't send video data to the broadcaster when watching a Twitch stream, so why would you send game data to a lobby when spectating a race?
Another way to advertise WipEout; the game isn't that big. They should start bundling free demos of their less advertised games as part of other games! Or even as part of movie discs, like they did on the PSP and PS3.
Heck, you could probably get a whole bunch of free demos of PlayStation 4 exclusives (with a lot of content stripped out), and make those demo discs playable on PC, Xbox or even that newfangled Atari Box (assuming it is going to be powerful enough to play modern games) with a whole bunch of "Enjoy the full experience, only on PlayStation" messages.
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All things considered, I think what WipEout really needs right now is more competition. I am not counting Red:out because it is just too different to be considered a true Arch Rival to WipEout at this point in time; if we want Sony to take AG racing more seriously, and thus start advertising WipEout on a larger scale, we first need to increase mainstream demand for the genre.