Introduction
 The introduction "Rigveda, a tatpurush compound of etc...." appears vague. Its as though a knowledgeable audience is being addressed. What, whose, when, where etc. are addressed quite later in the introduction. Are such kind of introductions in fashion or what ? I propose to change it to a more conventional one like the one for Avesta.
how is it vague? Do you mean, overly specific? This is the brief bracket explaining the Sanskrit term, too short for a separate "etymology" section, and too central to be banished to a footnote imho. I see nothing wrong with it. As always, if people don't know what a tatpurusha is, and would like to find out, they can click on the link.  (ᛏ) 

 It's vague for a first-time reader who may think its quite uninteresting or may wonder what is it. That tatpurush is a mouse-click away is not as far-away as the patience that is tested by introducing literary prowess right in the beginning. Besides, the order of merit usually is what, when, whose, etc. Its finer meaning can come in between this list or sometime later. This trend is seen in the pages like Ashok and Sanskrit also. I would like the opinions of others on not only this page, but other such pages also because we must make them readable for the quick-surfer, and for the average Joe. 

 OK just keep it simple like HAL Tejas, instead of a "tatpurush compound of...". That its a tatpurush can be mentioned later. 

this is nonsense. Practically every article on Sanskrit terms on Wikipedia gives a brief translation, and an analysis of the components if the term is a compound. See Yajurveda, Ashvamedha, or any other article you care to look at. And no, we will not dumb down articles towards your image of a "quick surfer average Joe", we have simple: for that sort of approach.  (𒁳) 

Please have a look at Nylon, Human, Aircraft and electricity, all of which either provide a separate mention on the etymology of the same in a section dedicated to explaining the same, or a very short and brief one (as in the electricity article).

Ashvamedha, and Yajurveda similarly need to be cleaned-up from this imagined stretch of yours that "we will not dumb down articles". Excuse me, this is a publicly viewable, highly accessible encyclopaedia meant for all. Thus, the more serious researcher would look at the tatpurusha compound blabber down in the history or etymology section, whereas the high-school student doing an assignment would be more than content with the info provided in the introduction. .