I second that...
and for Halo 4 perhaps my single biggest hope is for smaller rather than larger maps for 4v4 game play.
http://tv.majorleaguegaming.com/video/mlg-video/1049023053001-finals-team-3d-vs-team-phreaks-mlg-new-york-2005-national-championships
This video of 3D (Final Boss) vs Team Phreaks (Carbon) from 2005 is exactly why there are players who do not want/need Sprint and why people want a reduction in the nade damage. Note how fast the game play is, note how quickly players are shot off spawn, and note how precise pros had to be in order to get nade kills.
The video above is all about the gun, the grenade, and the melee - and winning is predicated on how quickly a team/individual reacts to a situation at hand. But it is all made possible by the map first.
Maps make or break the multi-player experience and are perhaps the single greatest factor in any given match.