Actually, Super Mario Sunshine only needed 50, but whatever. >.> The fact that there are like 154 more stars to get is daunting, no doubt about it.
As for likes and dislikes?
Likes: It's a sequel to Super Mario Galaxy. I'm no Yahtzee; If a formula works and is fun, more of the same can be great (obvious that someone who's beaten all Touhous would have that opinion :V). It has the same fun gameplay as the first game, along with a few genuinely difficult bits of platforming.
Dislikes: It's hard to explain, but the game is somehow less charming than the first. It's more a gut feeling than anything. The bosses are also for the most part pathetic. I know it's a Mario game, but my god, Bowser somehow got even easier than he was in the first Mario Galaxy. Most of all, the comet medals. They're usually not hard to find, but having to go back through already completed stars to find the ones I missed is a real pain.