Well, i've given my opinion of the show and each episode already, and my opinions on them haven't changed much after rewatching a few months ago.
But I will say that, while I didn't hate the first few episodes, there was certainly a lot lacking. Mostly, as Jobi said, there was a lack of joy. In all the other productions, the characters loved what they did, they weren't always very good at it, but they enjoyed it. They were doing what they loved and they knew they were making other people happy while they were doing it. The Muppet Movie highlights this perfectly.
I think that it, like any other show, just needed to find it's footing, which I think it started to during the second half of the season. It's a real shame that modern audiences, and especially networks are so fickle and impatient these days. There are plenty of shows that were almost cancelled after their first season due to low ratings or a lukewarm reception, but ended up churning out a huge profit in the long run like Seinfeld, Family Matters, The Simpsons, and Full House just to name a few. I really liked the last few episodes and have no doubt that the second season would've been something amazing if they had just given it another chance, and a better time slot.
On the bright side, at least it gave us Gloria Estefan and more developed versions of Chip, Yolanda and Uncle Deadly. I really hope they plan on using them in future productions, along with Walter.