im curious in particular because i originally came here to complain about the helm of excellence. the problem with the item as i see it is one, for its current function it is FAR too cheap. 6k or something in that ball park would be best.
ill first outline the problem. there are several spots in a few maps where you can have places where ONLY y our head sticks out. a few that come to mind are dust2 (the little dip at long a" and also the ledge in aztec that overlooks the water on ct side. basically, unless you are an orc with a grenade anybody with a h elmet in those areas has limited god mode. you could chuck a normal grenade up there, but those things rarely do more than 30 damage so the player basically gets free shots at you while you cant hurt them at all because all bullets hitting the head just go through it.
in my opinion, this item should be more literal in its function relative to its title. it should make you IMMUNE to headshots, and by headshots i mean the literal act of dying from a headshot. this would mean that the head area would not be immune to all bullets, but it would act like your chest. it would still recieve damage but at a much reduced rate since it is after all taking chest like damage. that means you could never die from a headshot, but it wouldnt be 100 percent over powered because in situations where your head is only visible you could kill them.
also another problem i seem to have with this item that by the time i realize they are wearing a helmet, im dead. or i never realize it. for example, ill be shooting at some guys head with the ak then he turns around and kills me. now at this point i can make two assumptions. one, that the bullets just went by his head and none hit. then i get frustraited at myself because i missed. or that he was wearing a helmet. both of these are frustraiting realizations. both lead to negative thoughts. its like, oh shit i suck. or oh shit i should have killed him except he was wearing a helmet and theres no way i would know.
so i guess the suggestion would be to either by default make its price more expensive(i know you can edit it yourself if you are server owner, but most server owners really dont edit it.) make it like the chest hitbox (i dont code, so this might conflict with something. im not sure if this would be possible) or have some sort of indicator that they are wearing a helm of excellence. a great way to do this would make their head model glow green or something. or some sort of glow. this would mean that, they sacrifice not only 1.5k for immunity to headshots, but they risk being noticed easier by enemies. this also gives the attacker a chance to react to the helm.
the gloves of warmth are a great idea, and initially i thought that being an orc with these gloves would be fun. but it turned out you thought of this and balanced it. so only store bought nades can be super orc nades. but what this means is that these gloves are practically useless. i dont know about other servers, because i only play ft on about 3 servers but i never see anybody sporting these gloves. as it is, grenades are so weak damage wise is a terrible idea because it will only do about 30 damage (unless you hit th em for 4x damage on a crit) and its not worth giving your position away. i dunno what you should do with the gloves. probably leave as is, but just pointing out something ive observed.
i very much like that you have given cloak of shadows a new purpose. i remember back in the original wc3 mod days for a littlle while the cloak stacked with invis, and it was really overpowered. though humans are one of the races i like to play, and being more invisible might be fun

basically though, the mod is excellent and ive spent hours upon hours playing it. my only real gripe about it is the helm. one other thing i forgot to mention is the helm promotes degredation in terms of getting better. because since theres no indicator that the enemy is using a helm, its technically a good idea to shoot at the chest so theres no chance you will get fucked. cs is all about headshots, and although this is wc3ft you cant have cs without headshots

great mod, cant wait till version 3.0