Quote: (Hena @ 31 Dec. 2008, 16:50 )
If I understood Erik correctly, it's to prevent abnormal army compositions (in this case against fluffic use). For example Marines wouldn't create an army composed of 40 Whirlwinds, even if that is possible with codex list.
Shouldn't that be the purview of the game system itself to discourage?
In 40k the only thing that matters 97% of the time is unit's killiness (measured largely in a linear fashion) divided by it's killability (likewise). If you have one "good" unit you generally want to have five and if you have five you'd rather not take anything else at all but that thing. Optimal army builds would thus consist of spamming those optimal units till you're blue in the face or (more likely) hit the FOC limits and must grudgingly take something else too. All Tyranid players I know would pee themselves in happiness if they could take winged Hive Tyrants to the points limit and nothing else.
From what I understand of Epic combined arms are much more (or at all, depending how cynical you are) important here. Only Warhounds, Ferals and aircraft, if even those, and perhaps one or two other units, could hope to make an army all by themselves. That's why we have 1/3 point limits after all.
Correct me please but I don't think I've seen a tourney list with 40 Whirlwinds or indeed 40 of
anything. Closest thing is probably an all-Terminator list which is as far as I heard still not that hot, and borderline imaginable in-setting. Borderline.
Thus if it is advantageous (or even not heavily disadvantageous) to have a homogenous army then it's a bad thing that must be corrected post haste, and if it is not,
the problem doesn't exist. The only times you see 40 whirlwinds (or land raiders, or a 100 land speeders or whatever) on the table is if some 20-years-in-the-hobby grognard finally went off the deep end, or perhaps was still drunk after winning "who has most Epic scale whirlwinds" contest the night before. For new players especially it is a non-issue. A good how-to-build-an-Epic-army article - which we have, an awesome one at that! - is 10 times as useful than a built in safeguard against buying 20 blisters of the first item in webstore and hoping to make a viable army out of them (hey, weirder things have happened - I've seen a lot of 50 shoebox thunderhawks for sale on ebay, I can't even begin to imagine...).
By all means carry on. But this looks like a solution in search of a problem to me.
edit: most of this put much better by Chroma while I was typing. Curses!