1 and 4 have been mentioned a lot over time. Tons of people would appreciate those features. A shame that they have not been added...and there is no indication that they will be added.
2. The game's creator has chimed in and specifically indicated that he is quite opposed to having this as even an option for the online game. (He has no problem with players doing it in their IRL games, of course.)
3. This also has been the subject of many past comments. I'd have no problem with what you ask (which is to have this ability as an option, not as the default rule). Personally, I play very different strategies, depending on if I go first or not. To me, this adds a lot of extra thought to the game, and therefore makes it more enjoyable. But I'd have no problem for players who want it, to have them play games that end in an equal number of turns. No indication that this option will be added, either.