1) Episode I its 14 (Padme), 9 (Anakin) I think Obi-Wan is around 20. Ep II is 10 years later. then im not totally sure on time from II to III but its probalby only a couple years max (if not shorter). Then its 20 years to Ep IV. Obi-Wan is (iirc) in his late 50's (I have an interview at home in a SW insider that says his ages)
2) This is basically an inconsistancy introduced by the PT. but not a major one really, it would have been a short time after their birth that he stopped going by obi-wan
3) he never owned R2. R2 saying that Obi-Wan was his former master was just because of the mission Leia gave him.
4) only time Anakin meet owen on screen. And if i remember the line its 'he thought you'r father should have stayed out of it' or something along those lines. nothing about telling Anakin not to get involved. Maybe he expressed that thought to Obi-Wan when he dropped off Luke (as thats also the first time that we know of that Obi-Wan and Owen meet). I think most people thought Owen knew Anakin better and vice versa. but thats your thoughts from seeing before the PT was made, thats not how it is.
5) because 'I took this from your father after I cut him in half and left him for dead, and am now giving it to you so i can train you as a Jedi to kill your father' sounds so much better and why wouldnt Luke follow him after that kind of honesty. I really fail to see why Ben's 'lies' are such an issue. He gives Luke enough information (sometimes from a certain point of view) that he will be able to handle but gives him what he needs to know at the time.
Yes Lucas could have (should have) made everything fit alot smoother, but he didnt. Some issues couse bigger problems than others. Some are essentially non existant if your not so anal (not saying that your being anal, just a generic comment to people that complain about every little aspect of it) Like Ben's 'lying' he 'lied' throught the OT, now because comments he made in the PT make stuff seem as 'bigger lies' or add in 'new lies' its a big deal?
6) i was just wondering what happened to this as you went from 5 to 7 yet call yourself a perfectionist and state that your comments are picky
7) possibly, I know some of that time was on the Tantive IV (the blockade runner from the start of Episode IV) but I believe there was a base shown. but in 20 years anything can become deserted. and as seen in ESB the rebels moved/deserted bases all the time to avoid being detected (that happens in an underground war). Plus, the rebellion really wasnt formed at that point.
8) yes, thats exactly why he did it. you answered your own question. Mine is did he do this because fan's wanted/needed an explanation or he felt that the audience did. I personally never really questioned it. and if someone did bring it up, it didnt bother me cause i was able to make complete sense out of it (at least for myself)
-Darth Simon