Are you retarded? Being taken out of a game like that completely ruins the thrill, especially if you know the monster will give you a few seconds before phasing into existence from the same hallway. When I played 3U on the Wii U, the loading screens were closer to five seconds, which definitely broke the pace of the game.
Loading screens are awful and should be eliminated whenever possible, you battered housewife. If they're finally moving past the memory limitations of designing for the PS2 and 3DS, then good for them.
Do you seriously believe a monster existing in the world and playing by the same rules as the player makes it less impactful? You still need to catch the monster to mount it.
Full disclosure: I gave MH3U on the Wii U an honest try (about a dozen hours, if memory serves), but overall I recognize the series is not for me. There are a variety of reasons for this (you've probably heard them before but I can go into detail if people are interested to hear the pleb perspective), but one of the biggest was exactly what you're describing with the stupid posing animations after my character consumed a healing item or something. I don't have any problem with my character taking a long time to use an item or to heal; it's fine with me if healing carries a four-second animation because it's a risk.
However, in an action game like MH, responsive and tactile animations are extremely important. I don't have a problem with the attack animations being slow or having lots of recovery, but I never felt good about consuming a healing item. I want to drink a health potion to recover my health, not drink a health potion, THEN pose for two seconds, THEN get cockslapped by a dinosaur.
What truly drove me up the wall is how simple the solution would be, in that you just make the animation take longer and don't have the player character do some completely unrelated animation after eating/drinking. If the player spent a second putting a flask away after drinking, it would be fine. Better yet, you could just have the drinking animation take, you know, four seconds in the first place, but if they're well and truly committed to having recovery on healing, then there are infinitely better ways to do it. Every time I had to heal or boost my stamina, I thought "man, that's so fucking stupid" and it completely killed my interest and immersion in the game.
I truly don't mean to sound like a newfag graphics snob; I understand the appeal of the gameplay loop, and I normally try to accommodate odd visual quirks in order to serve gameplay, but there's something about the posing that triggers the fuck out of me.
MHW looks interesting and I may give it a torrent if the PC port isn't complete dogshit.