Help with a Cube

[Agrus Kos, Enforcer of Truth]

Okay, so I have my Peasant cube, and I love it, but there is one problem: a lot of my friends are new to Magic (within the last year or so) and only play casual so they when we draft, they spend a lot of time reading cards and the draft takes forever. To remedy the situation, I want to make a cube that revolves around Ravnica, so they will know the mechanics and most of the cards. I don't want every card to be from Ravnica, but I want many of the Guild ideals expressed (such as {W}{G} getting a lot of tokens). I think this will speed up the draft, while introducing them to some new things. Any suggestions are helpful and there will be a lot of multicolor, so hybrid color cards get bonus points (because of flexibility).  To clarify, this isn't a Peasant cube, so feel free to suggest whatever you want. For each of the color combos, I was thinking:
{W}{U}-Enchantment control
{W}{B}-Lifedrain/Lifegain
{W}{R}-Battalion/White weenie
{W}{G}-Tokens
{U}{B}-Ninja/Unblockable (I would do mill, but it is really hard to balance in a cube)
{U}{R}-Instants/Sorceries
{U}{G}-+1/+1 counters
{B}{R}-Suicide/Aggro
{B}{G}-Graveyard (Scavenge/Dredge/Unearth/Delve)
{R}{G}-Stompies? Like RG Monster type things?

[rarehuntertay]

For R/G, i would suggest cards like {Fires of Yavimaya} and {Shivan Wurm}
Red has a lot of flying fatties, so {Dragon Whelp} and {Shivan Dragon} for an old-school feel...
One of my favorite green cards of all time is {Werebear}... not only is a mana-dork, but it can get big!!
Also check out {Craw Giant}... he basically reads block me if you dare!!
{Force of Nature} is an undercosted fattie, but has an upkeep cost
{Thorn elemental} can be cool.
If someone drafts a lot of R/G trample, {Stonebrow, Krosan Hero} screams build around me!!
Those are just a few ideas i can think of right now

[Ekann1]

{sphere of safety}?