I love the feel of SNC, but the Brokers imbalance is a bit annoying. I'm going to see if I can do anything to get around that

archetype analysis:
WU: fliers, tempo, counters
UB: self-mill, 5 cmc in graveyard
RB: Sacrifice? Aggro
RG: Treasures, midrangy
WG: Citizens, alliance, go wide

Bant: Counters, Tempo, Assertive
Esper: slower, can be assertive, controlling
Grixis: control(?) Tricky stuff
Jund: sacrifice, midrangy, assertive
Naya: Go wide, midrangy to aggressive

Considerations:
keep two-color more aggressive archetypes, but multicolor possible
keep focus on three color and multicolored set
slow down format- I was something like meeting of the five to be playable
err on keeping cards- will introduce cards from other formats, but try to keep the visual appeal of SNC

kind of want to emulate KTK
aim for 450 card cube
75 3 color cards (done)
20 colorless nonlands (done)
50+lands (done)
6 5 color (done)
30 2 color
10 2 offcolor (done)
49 of each color

Are duplicates ok? Sure, if we need

What is the power level of this cube? don't want a high-powered cube, slightly higher than average limited set, I guess? Want a little jank. Want to focus on replayability