[SolAndLuna]

Regarding the original idea itself... to be entirely honest, I don't see why it wouldn't work fine. Just some amount of Asagorians/Patrions to boost up to a high level once per character, and a choice of two classes to unlock and level boost along the way along with their base classes. Could even put them at something like level 55 instead of 60, and 30 instead of 35 for class levels, if there's concern for it removing IC. If concern is on it being pay to win, limit it to keys where one level 60 (or LE'd) character exists already or something - they've proven they can get to level 60 without shortcuts by then, after all.

For that matter, there's still the hunt for equipment, and enchantments, and quality tools, and memory shards, and optional obtainables if your class has those (youkai/copy spells/etc), and consumable items, and a healthy supply of the specific food you want to use, and any prerequisite LEs for crafting, or stats for the ones that need it... it all just takes up a lot of time, usually even after you get to level 60. It can sometimes take a good while to get everything you need, doubly so if you're trying to get them shortly after getting to level 60, as you don't have any money to really work with just yet.

And in a sense, there are actually a handful of reasons for why you'd want to at least provide someone the ability to at least skip the most openly noticeable issue, and the one with the least shortcuts available to people.

1. If you want to take part in events, you don't have the luxury to show up underleveled, which makes the problem fairly similar to the one found in most MMOs - either grind up and get all of that gear so you can attend, or be dead weight.
2. Every "capable combatant" character, including some roles, showing up rustier than a door in an old abandoned shack, only a cloak and a basic longsword on their back... well, to be honest, it both gets very old very fast, and also makes people see IC and mechanics as two massively different beasts altogether, when they're both interconnected and should at least carry some of the same basic principles.
3. Villainous characters having to grind in the same areas kinda limits the amount of things some of them can do, too. It usually ends up with them either looking (mostly) okay until they get everything they need, or otherwise trying to avoid interaction until after they're fully prepared in one way or another.

At least in my mind, it makes sense for that kind of idea to be included for those that are willing to pay for it. It's not like it removes the ability to just achieve it the normal way, nor does it devalue it either.

I don't disagree with the other points as well, especially LEs needing to be replaced with something else - speaking as someone that's LE'd enough to get a full legend book, it's painful and mind numbing, doesn't matter how much I enjoy the game if I'm running around killing the same enemies for 5 years. But, I also agree with the idea of having some sort of shortcut available for the people that either don't want to grind or don't have the time to actually enjoy the game otherwise.