I have now completed my cube, for the most part. There are a few new cards I want to add from the latest set. But I have mostly everything figured out.
Multicolored cards were cut back to increase the amount of mana-fixing artifacts available. That way multi color decks are easier to play.
There are plenty more things I want to cut, but I won't do that until I have the suitable replacements available.
Next update will feature the last major overhaul and have things really refined to their true form. Right now, the biggest thing is that I have all card slots filled out.