Yeah, but thats the issue here: ONE piece of gear making a huge difference (specially compared to accessories).
So there are basically three options:
1) Average ilvl is calculated based on the "weight" the piece is contirbuting - aka weapon more than the bodypiece and the bodypiece more than your earrings
2) We seperate ilvl and weapon-ilvl
3) The contribution of the weapon to the overall damage gets lowered (atm it seems that it makes up about half of the damage instead of the 1/13 or 2/13 that it is when calculating the average ilvl)
The issue is simply: not having appropriate gear always sucks, but when it comes to the weapon is especially bad because of the system that is in place. So this seems to be a problem that should be adressed - again, just because the game allows someone with an ilvl110 weapon to enter Alexander at the moment, doesnt mean that that is okay (and quite frankly I cant imagine that thats "working as intended") and doesnt has to change.
Ah, now I'm getting your point - you'd go for option 3) then? And make the weapon "weaker"?
Mmh... not sure if I like that tbh - while I do see the problem here with questlines like the relic and weapons being the ultimate reward from raids I can understand that they're giving the most boost when it comes to damage - just like armor gives you more HP/protection for incoming damage. The weapon is what deals damage, the rest of the gear is what protects you - seems pretty intutive to me...
And its also a bit more "interesting" - we dont have that many choices in the game after all, but if every piece of gear basically does the same those options get even lowered when it doesnt matter if you get a new weapon or a new bodypiece.
(and btw: I do notice when the DPS, tank or healer are missing good gear in dungeons - and depending on the duty I'll say something. Had a tank in DV recently, best accessory was a level 39 earring, everything else was way below. We couldnt do the duty because the healer couldnt keep him up - probably because they were missing 2-3k HP...? And yes, this was a tank - but why should dps NOT have to care about gear?)