juanabolche,
2) Maybe in the future
3) Actually in real life it's very possible to know if a ball is going to be out or not, but it's hard to be 100% sure, that's why sometimes we see a player letting a ball go and it ends in. It works more or less the same in TE.
4) Actually the slice in TE3 is a bit less effective than in real life ; in TEM2 it's a bit more effective, but also a mishit slice is much less effective
6) TE4 will keep the legacy TE3 ranking system