I don't think it is trowing at random since you know where the enemies are, you just don't know their precise location. It's not everytime you hit the grenade exatcly where your target is, if so most of the grenade throws we do are "random". I mean, you made the move to throw an explosive because you know what you are doing so how can you not get any feedback of this? Even then you don't have any hitmarkers in the game at all you would still throw the grenade, the difference is now you receive a feedback and it encourages the use of explosives not just to perfectly spotted enemies. Maybe you get a kill from a lucky shot but that is the reward for doing a move in the right time at the right place. This is vastly different than you are in a Breakout match, and you do not know where the enemy is, so you throw randomly just to check the corners, this is throwing at random.
Throwing a grenade in a room and getting free information is exactly what is wrong with hitmarkers in Halo. You don't deserve to get that free information from just throwing grenades at random. Even though you might know targets are in the general area, at best its still a guess. That is not a "tactical" decision, it is just crossing your fingers and hoping you get rewarded for it.
That's what I think. Hitmarker is an important feedback of your action. Let's take an example of a capture the flag match. When there's a concentration of players fighting for flag capture/return in Fathom. You are outside that room and you eventually throw a grenade insidei the window of that room. You know there are targets there, but you cannot see them because the flag room is in a higher level. Throwing an explosive and getting a feedback on your crosshair is vital for your next movement. If there are no hitmarkers in the game whatsoever you don't know if the grenade you just used had an effect or not, unless you get a kill.
this reminds me of the subject of sprinting, if you do not like to sprint just do not do it!!, however, in this topic you should add a small option to activate and deactivate the hitmarker^what they said. I personally like hit markers. They give a slight return of satisfaction when I do make tough shots that perhaps doesn’t kill, but weakens enemies. At long range it’s harder to tell if you hit them or not.
I think saying that the hitmarkers does not belong in Halo because Call of Duty did it first, is ignoring the tactical possibilities that information provides for the better.
There is a difference between knowing that you have an enemy cornered in a specific place and "well there seems to be enemies up there somewhere." Regardless of how you think you use grenades with hitmarkers, the simple fact of the matter is that knowing whether your grenade landed outside of line of sight is a huge amount of free information that can and does get abused.
People very specifically don't
always "know what they are doing" with grenades. Trying to guess where the enemy is or predict their movement is a valid "tactic" but at the end of the day you are still taking it on faith and don't deserve free information from a lucky guess if you can't see it happen. Lucky random kills are a fact of life in a shooter, we still don't need to give them any more of a reward beyond that.