There was never a rush for levels in Diablo, you get your minimum needed just by slashing way through. Rush for levels/"burn through game content asap" themselves are some sickness on their own, which I didn't see anywhere else as much as in WoW (and it's clones).
Also I don't see much sense in having 8 people in D3 party except on very very rare occassion. Why 8, even 3 people is too much to play with regularly.
In D3, the one who kills mobs/boss and doesn't die - wins. Take WoW (though innately such numbers aren't possible, just example), you can have 100k dps, but if you are 1-shottable, even Problim with a bit over 400k health will have enough time to kill you. In extremity, you can have 1 mil dps, but 1k health, I guarrantee - you wouldn't be valued in any raid, as you'd be aoe'able by everything. In WoW your survival depends from other people, not you (assuming you avoid bad stuff), in D3 survival depends only from you.
Having said this, some kind of ingame recount would be nice just for theorycrafting reasons (to see actual distribution of some proc, amount of avoided attacks, how much Rage you got in duration of fight thanks to new talent on practice etc., not just pure dps meter).