juanabolche & HeadHunter,
I understand you can get frustrated by the situation.
Now, hopefully, you can understand I'm 1000 more frustrated than you, at the very least. I wish TE4 could already be done : my life and my family depend on it, literally. Soon the Big 3 will be retired (they are all just 1 bad injury to be done for good), so I always worry that we'll see the end of a golden age for tennis, meaning that TE4 will be finished too late and doesn't get the success I hoped for. If it doesn't, my future money-wise could get really muddy...

Anyway, there's an alpha of the game that is already played by a lot by people who have pre-ordered the game. TE4 as a simulation is already much better than TE2013, even if gameplay-wise it obviously still needs more polishing and balancing to reach the state of TE2013.
The only really important things missing are the online mode (which is my top priority right now) and the Modding support (you can already Mod the Tour & Players bases & add 2D courts, though).
What would you like to see in the game right now ? I still didn't decide for sure what I'll do once the online mode will be operational, so you can voice your opinions, that is one of the benefits to have pre-ordered the game.
lolo2b,
why you can't play TE4 ? If it's because of the requirements, they won't change...
megyaem & rharm2,
thanks for your support and your understanding.
