Login. Loading Screen. Appear in world. Dun dun dun dun dun dun dun duuun. You are now level 50 on all jobs, crafts, and gathering. You have every achievement, item, minion, etc. in the game. Congratulations!
Deny it all you want, this is what is being requested. If you completely suck and put forth no effort, you don't deserve to win. That sounds harsh but I'm sorry, a BLM (as an example) who is decked out in full i100 gear and yet still starts his dps rotation with 3 fire 1s instead of fire 3, does not deserve to be handed a T5 win.
You want older content to be easier, SE should add in job quests that actually require people to learn their job, instead of making it a face roll to 50 and then expecting them to not suck. Having said that, every job out there has countless forum discussions with number crunching and explanations on how to play them well. If you can't be bothered to learn, even after someone else has made a guide for you, you're not trying.