I don't like it, because IMHO ability/skill checks do need a much larger bonus range compared to attacks and saves, and that's the reason behind WotC introducing Expertise for skills & tools only, with no similar feature available for attacks and saves. In other words, the standard bounded accuracy that works well with attacks and saves, doesn't work equally well with skills. This has something to do with the fact that many attacks/saves are required to reach the target outcome (win the battle, survive the dungeon) while it is common to see more immediate targets for skill checks (unlock the door, disarm the trap, jump the chasm), together with the fact that the latter have a more 'spotlight' effect on the PC doing them. So bounded accuracy works great when the result is to make everyone feel they matter in a fight, but not so great when it makes the 'expert' characters being too often overtaken by others who never invested in the skill. They could have solved the problem by using a less swingy dice for skill checks, but instead they went with doubling the bonus for the true experts.
If there is a problem with Expertise for multiclass characters, I blame multiclassing rather than Expertise.
Edit: got it wrong the first time