I too look forward to untethered jailbreak & sometimes I am frustated with how long it takes.
But I think most people get confused with the difference between a new exploit found and actually creating a jailbreak that uses the exploit to get jb on the phone.
The work involved would be similar too searching through an entire dictionary for a 1000 mispelled words, retyping the entire dictionary with the corrections. Oh; and translating on the fly from english to computer code. One charactor error such as a missing space or a period and you have to spend hours searching for error to correct bug? for example: Google "source code".
I think these teams do all this tireless and for nonprofit work for the challenge & that they truly want to release as quick as possible. They also have the added preasure of making sure they don't brick a million peoples' phones.
I think we'll all enjoy our flawless jailbreak soon. At least until Crapple convinces the masses they need to upgrade to the latest "improved firmware".
I for one don't upgrade until the new jailbreak is already released.
My 2 cents & some food for thought...