I was just discussing this mod with a friend, and then go into the Half-Life vs Half-Life 2 debate. We both decided that Half-Life 1 was a much better game, but neither of us had ever beaten it. Due to the fact that we were both quite young and confused during some missions and got hooked on Counter-Strike, we quit Half-Life before ever completing it. During this conversation, it occurred to me that mid-mission objective indicators didn’t really exist in games back in '98/'99. We both came to the conclusion that, with some helpful objective indicators during missions, Half-Life would have been an absolutely perfect game.
So my suggestion is that you should toy around with the idea of implementing mid-mission objective indicators or hints or something at various checkpoints during the game. Nothing is worse than running around for 15 minutes in the same hallways because you’ve forgotten to press one button. Perhaps the indicators could be used to correct the user when they are doing something improperly. Let’s say that I have already completed Mission A and am attempting to head towards Mission B, but have wandered off in the wrong direction. Once I complete Mission A, some indicator check points will be activated in the hallways which I am not supposed to back track, and will point me in the correct direction. Or you could simply fill the game with checkpoints that will spawn objective hits or tips.
For those of you who know the game like the back of your hand (you know who you are :p) and don’t need these indicators, there could easily be a button in the options menu to disable hints… or even a button that could be pressed to display the previous hint.
Feedback?