Also you are forgetting that this is the Elder Scrolls forums where new ideas and concepts are met with heavy resistance. Basically if it is new or different to what they have had before in an Elder Scrolls game it is automatically treated like the plague with a million voices chanting in unison "WE HATE CHANGE".
Although I would agree that there is some resistance to change I also believe that many negative comments about suggested additions do fall into the "it doesn't fit the TES universe" realm. Thrown weapons were in previous TES games, then were taken out. Adding them back in would be fine as it still fits in the game. Grenades or splash potions, although a good idea, never was in the game and doesn't quite fit, imo, into TES.
The difference, to me, from other RPG's that have such features is a very extensive lore in TES that others do not have. Not to say that everything must fit lore, but it helps when it does.
Just because one (or multiple) fantasy genre game has it doesn't mean it fits into all fantasy genre settings.