Sorry guys...I can't reall agree with this idea at all.
In the show, they look like they are telporting to a new location suddenly. There's no ghost image or any crap like that...and more importantly, there is those odd vertical lines that indicate the character has "teleported" to a new location...hence the particles are acceptable (although I think they are a bit thick, honestly.
And losing the lock if someone teleports is a horrible idea...no one would ever bother to use the melee...and then it would be just a question of whoever runs out of ki first gets nailed...and then the whole system of using your ki to recover from a melee hit would be pointless cause whoever runs out of teleports first is the one who gets hit, and then he has no juice left to stop himself from hitting a wall either way.
You guys just don't use the teleport right...how often have they used it to get around in the show? Almost never...they use it to get out of a tight spot or cover a long distance to a foe qucikly...if you use it for those things (tap teleport three times next time a melee enemy is diving at you, see how useless you think it is then) then it's excellent.
Although I do agree the particle effect is a little...thick.