I often wonder if he's got an agenda; but again, I'm naturally bias. His characters all have a common theme. If he was to expand a bit, I think it would allow me to see him and his work beyond that doubt. I'm just not there yet.
Of course, I understand that his looks/physical-characteristics aid in playing those "common themes" but they should also help him in playing an Israeli character just the same; one would think. I wonder if he would ever consider doing a serious satire, or dark comedy, about an Israeli leader, for example. Something truthful as viewed/considered by the rest of the World (outside of Israel). Something very controversial. Being Jewish would allow him (like no other) the opportunity to do that perfectly; and get away with things most could not. He has an advantage.
In my opinion, this would break him out of being this one-dimensional character I've come used to seeing. But again, I'm not sure an Israeli is that different from what he's been doing (I have to think a bit about that one ... it's more about the message I want him to send ... about himself, his characters, etc.). And ... After all, you have to be able to laugh at yourself to be a true Comedian; right? Then let him take on Jews, but not as a religious group; rather, as a people that have grown to have influence over Washington D.C., have their own country, be at odds with the UN for several violations, control a region beyond their borders, are a target of their neighbors, have military prowess with extensions ... and receive more aid than the rest of the World combined.
Tackling things like that, under a character, can only be pulled off by him. Add a little control of much of the World's banks, Hollywood, and a few other things and he's got a movie. The fact that he has not done something like that when it's right there, is at the heart of why I think he may have a hidden agenda, and contributes to my lack of trust in his work.
All that said, I think he's funny; but that's about it. Nothing more than "funny." But again, I didn't think much of Seinfeld either. I liked the show; just not him personally. I thought he was the weakest one on the show. Now, Jack Black ... I think is good to watch.