Does anyone think they made the Jedi (particularly ones like Yoda) too powerful, to the point that it makes them look stupid every time they are in a "dangerous" situation?
The same thing has happened in many stories involving overly powerful beings. For example; Superman. If Superman stories were written in such a way that his powers were consistent, and he used them according to common sense, he'd be unstoppable. Kryptonite? He'd never allow himself to get close enough to it for it to be a problem; which wouldn't be difficult for someone who can think/react/move at; near; or beyond light speed (depending on the version of Superman). A single punch from him at such speeds would unleash unimaginable amounts of energy, and if he flew his entire body into a target at such speeds, it would unleash somewhere in the neighborhood of 3.3 quintillion ft. lbs. of energy.
So we have Jedi with telekinetic powers. We know that Yoda can easily lift an X-Wing which has to weigh several tons at least, and even says that size doesn't matter. Well, with a power like that (being able to move any object regardless of size), that = "game over" for anyone who opposes them; or at least, anyone who is not also a "force user".
So there is a "Death Star" ... so what? Yoda could fling it anywhere he wanted to; or better yet, crush it. The only match for Yoda's established "irresistable force" is an "immovable object", and the Death Star was certainly not an immovable object. So your ship is being attacked by another ship? Simply use "the force" to send it hurling into an asteroid; or of course, just crush it. A droid army? Fling them into outerspace; or of course, crush them all onto a large ball of twisted scrap metal.
In Star Wars (1977) there is no evidence of this unlimited telekinetic power that Yoda established in ESB. Jedi could use the force to guide their movements with precision, even without the benefit of eyesight; they could sense disturbances in the force, and could do "Jedi mind tricks" on weak-minded individuals; which is a good example of a smart limitation on a power by Lucas; because in unlimited form, the Jedi mind trick would have been a "game over" power as well.
What we ended up with were Jedi more powerful than Superman (not even Superman can move any object regardless of its size), but still needing a clone army to fight battle droids, or having dozens of Jedi overwhelmed by battle droids in an arena, etc., which is ridiculous.
The recent TV show "Heroes" suffers from a similar problem. There are characters that can manipulate time and space; a power that also = "game over" by default.