There are some gotchas in the early game but that's part of the learning process in any strategy game.
I don't want to be led along by the hand, and I don't think it's either feasible or desirable to provide warnings for every little thing you could do wrong in the game that might cause you to lose. This is a big, complex and deep game, and part of the fun is exploring it and learning all the systems.
There's nothing in this game that can't be figured out using either the excellent and comprehensive tooltips, the in-game tutorial pages (which I expect will be much expanded once the game is released, the manual and a bit of trial and error on the part of the player.
In defence of the original post, this game can take a long time to play, and so I understand that someone might be upset when they're twenty hours in and realised that they forgot a critical part of their development which could lead to a loss. I don't mind that situation personally, and is why I tend to play on smaller maps and restart a lot whilst I'm learning them. But I'm against any simplification of the game mechanics to facilitate easier learning: the kind of people who will buy this game are intelligent and usually willing to read a manual. That's the Matrix way, as far as I can tell :)
The supply system is by far the most difficult part of the game to understand at first but I think that with some expanded tutorial material in-game, it shouldn't be too painful for people to pick up. I've yet to see the latest version of the game but I fully expect it's moved on a fair way since the review copy I have.