Dunno if making everything a rush actually helps streamline things.. :/, I think of streamlining as more of making it fit and sleek, easy to understand.
Imo what could really help is creating a better recommendation tool, like a Adventurer LS you get early on that sort of sets up this cute communication with you and the leader of whichever inn city you relate to, a neat interface that helps me know when I have job quests available, where the heck I'm supposed to go for the next new dungeon, MSQ WHERE?, I'm in a zone hook me up with leves, hunts for THAT area, and suggest me to some FATEs, haven't been to the GS yet - you've earned a break.. etc. Even if there is a level jump potion there is still a LOT of stuff that you should be guided on, like just hit 50.. WHERE do you go? Armor, ilvl.. what? GC? What's a GC? So much wut.
When I came back I was like WHERE IS THE MAIN STORY PERSON~? lol I had to go into my journal, find the last quest I completed and then go online and read the quest chains to figure out the next one - cause the game wasn't recommending me to go there. Then I had to go figure out where many of the dungeons which the system didn't recommend either. It's certainly more old school / "immersive" that way but if we're talking about people joining really late wanting to logically get things done, then having to check online for a massive guide isn't the most ideal.
/la (linkshell adventurer) hook me up. Will get you a laundry list of things to do in that zone with consideration of your level and if you have a job quest, with bonuses for doing them in an order that keeps you doing new things (no 24/7 fates, dungeons, or w.e). Experience the open world and the new dungeons, and at lower levels yes reward large sums of EXP but making sure they're trying it all.
/la anything big? could be an easy way to check for new dungeons, MSQ, what have you.
Of course there would be an interface too, don't have to type if you dont want.
Could move some of the nice server messages into the communication too
/la Goodmorning Wubrant! (or whatever time frame it is)
/la I have a request in for an adventurer to check out an issue at Quarrymill, perhaps you should gather some friends! (text comes with a link to map so you can teleport there, marks on your map an npc you should go talk to to learn that scary girl is back and you need to go into X HM dungeon again).
/la Alphinaud would like to speak with you at " "
So by typing "hook me up" in the LS and then it starts a stream of content - she recommends you go to this fate while she looks over the leves, finish that and she has a leve in a nearby location with two minor monster hunts, finish the leve and the two hunts, you go back to the aetheryte for a quick rest - leve reward and you pick up a gift she prepared for you (2 potions, 1 meal), looks like some adventurers are getting ready to do a dungeon would you like to join them (prepares a dungeon queue for you while you do other stuff), looks like you just unlocked a job quest shows a map link, now that you're a higher level she asks if you want to see the beach, a great canyon, or deep forests - you click one and now you're doing your next bracket of content in a new zone.
Would be helpful for DoH and DoL too, especially DoL lol - where the heck you should be leveling and mixing in nice exp rewards while varying the content as much as possible.
I've considered they could also make it far more simpler (but the recommendation system still needs a bit more improvement) and they could make it a moogle buddy.. since I really want one of those anyways.
Kicking a person to level 50 doesn't really sound like the first step in streamlining the newbie experience, that's imo making it much harder to streamline.. because now you have all a sudden thousands of quests you can be doing, some of which are very important, as well as so many areas to visit, dungeons to check out, its just a massive all a sudden unlock. I think a system that could guide you around the game in both a beneficial and less grindy manor could be helpful. Even if you're still being booted to level 50, specifically making you level 50 isn't the key to streamlining.. that's just the key to making sure you can play with friends, but you'll still likely be massively confused (unless your friends are good guides).