Indeed.
See, this is where it may not be so simple. Disabling the marker on the top right may not alleviate the issue much. From what I understand, the marker changes depending on the location Geralt is in (near Novigrad it was a Noonwraith. In the swamps the Fiend. In the forest the Wereworld). This runs synchronously with the monster description located above the recommended potions (I guess?). So they could just look in the tab at any point and see it there. No matter what level we're on, surely this description should be available at *some* point in the 'investigation' process.
I thought we'd learn about the monsters through various means. It looks like Witcher Sense (on easy at least) just helps with locating the beast (even though that's pretty silly considering we have markers too).
I hope my post was not misunderstood. I do not want these markers visible on the HUD and I would also like to do everything that entails investigating what type of creature I will be hunting. Preferably through NPC and environment interaction - Locals telling stories of missing people, livestock etc., Books, Bulletin board postings and via the Witcher senses - Tracks, scent, sounds. Ideally it would be perfect if some tracks were also visible without the need of using the W.S. The investigation information has been said to accumulate on the above points I have already posted plus depending on that particular monster family. That is another neat way we will build up knowledge - Past encounters with certain species.
* Rumors from NPC's about monsters and their supposed whereabouts does not necessarily need to be by
locals either. Having such a dense and large open world allows situations where for instance - You talk to a villager or an Inn keep up North, they go on to then inform you -
"Whispers Master Witcher, Aye. em, *cough* That's right, heard et with my own two ears now I did. Missing folk down by Downwarren,nasty business it is. Children gone astray never to be found, only a drop or two of blood and empty space where they were last seen, before mysteriously vanishing. * cough* :: Inn Keep shakes his head slowly, holding back another fit of coughing:: "Nasty, nasty business down there in Velen. Something evil is afoot I tell you!"
So with this and other similar scenarios, we would hear rumors of potential disappearances,murders and so on, a fair distance away from the origin of the troubles. I love coming across a journal entry, note, rumor/story etc. and then a few hours later, down the road come across something relating to that relevant source of information. A body of said missing child or person, Monster that was relayed fitting a particular description or attack pattern.
You get the idea. For me, it adds a sense of believability to the world, immerses me even deeper. A few games have done this and I can remember one of the very first times I came across a similar situation as I painted above and after that I was completely enthralled.