I was playing a few games on multi and zyph comes in the room. I really wanted to see just what a top player could do so I asked him what his limit was. He said something along the lines of as long as its not a complete vib map I can play it. Just then another player in response said that if you're good enough nothing is a vibro map, meaning there is no such thing. There are couple things you can take away from this but what I took away is that if you are fast enough there is no real vibro maps. To back this up with 5000pp (think you said) you are a awesome player. But I bet you have hit at least one wall where you felt like your hands couldn't move faster and you had to 'vibro' just to get a decent score. But if you went back to that song now you would realize that the song actually wasn't as fast as you thought it was because you got better and a lot faster.
With vibro maps, or the maps your stuck at and want to get better at its the same concept. Get faster by playing faster/harder songs. It's pretty simple. As far as what you can do outside of the game? You can workout your hands, wrists, forearms and shoulders since if you are really going for vibro maps you will probably use those areas the most. And hey why not working out is healthy for you isn't it?
Now I do realize there are actual vibro maps that no matter how fast you get its basically humanly impossible to play, but we all know that he obviously isn't talking about those maps.