I know, crazy idea, but given that it's a world event that can (and has) crashed servers and caused server congestion preventing people not just from enjoying the fight, but even from preventing people not even doing the fight from other events in the zone such as questing, gathering or other forms of leveling. I'm sure it's a fun fight worthy of a massive stage, but it has been twisting the knife in servers already plagued by congestion issues and concerns over server stability.
To alleviate the problems that the Ixion fate has caused, I would propose its temporary removal from the game until such a time in which all servers are stable enough to deal with the full mass of people on any given server that would wish to take part in the fight all occupying a single instance. It would be important to note that the number of players participating typically range in the hundreds, or otherwise the current population limit for the instance containing the Lochs zone.
An alternative solution to this matter would also be to turn the Ixion fight from a fate into its own trial fight. As making a grand-scale fight into a trial has worked for the Urth's Font fight in patch 2.5 to a relative success, this could also just as easily work for the Ixion fight as well with the sole difference of still removing the fate itself and replacing it with an Ixion trial. In addition to converting this fight from a open-world fate to the enclosed arena of a trial, it would ease the population load on the Lochs instance.
This is not about who has or doesn't have the mount, or who may be however close they are to getting the mount. This is about solving a problem plaguing multiple servers on what is now a weekly basis.
This request is also something that should be considered to be a temporary solution so that all players--not just those players parking in the Lochs for hours until it spawns and causing continuous strain on that instance, but all players--can ultimately have access not just to the shiny pony at the end of an electrified rainbow, but also what should be the grand and amazing fight that the fate is currently failing to be.