Improvement on the first.
Excellent collection of microgames. I feel that a stage select featuring challenging difficulty levels (ala Warioware Inc.) would be a great addition to the next installment of the series. Eight lives is extremely generous also, since there is no real scaling difficulty that I've seen. I have no idea where all these reviews claiming the game is too difficult are coming from. Perhaps if you are very unfamiliar with microgames or a traditional old school joystick and one button layout. Either way, I wouldn't let them get to anyone involved in making these microgames.
The only one that was a bit unfair was the Save Two Smilies game, since the smilies disappeared if you simply hit space, rather than just being dropped, which can make it hard to determine the mechanic the first time. Even then, you play it once and grasp it.