Expose their weak early game or you'll loose

These champions are not unblanced (at least let's not argue wether they are or not), because they have their own strenght and weaknesses, but in the most unfun way. What if you can't keep them down in early game because you didn't pick an agressive early game champion? There are 2 possible outcomes:
- his weak early game gets exposed, he ends up with 0/15 after lane, the player himself is tilted cause he can't do anything at all, the whole team flames, even more annoyed
- he gets safely trough laning phase and midgame and just annihilates everything in lategame teamfights, with the enemy team tilting because of how little they can do to stop them Both are not fun for either the own team or the enemy team.
I would rather prefer if their laning phase gets buffed and their lategame trimmed down, but riot seems to disagree, when buffing kassadin they just straight up increased the ap scaling. When they buffed vayne sometime ago they increased the scaling on the q (though they reverted the change right after), when changes happend to veigar riot increased the ap stacking (long time ago). How do you think about this way of balancing?