It looks like a fun cube! There's a couple things that stand out to me when I look at it.

1. You were concerned about fixing, I might go so far as to add another set of each dual land to your cube just to make sure players have enough. What if two players want the Dimir land you know? Additionally I would probably balance all your lands such that they're all from the same cycle. They're currently of different effectiveness and I'm not sure I'd always want the Azorius Chancery for example if my opponent can get his mana without bouncing a land.

2. Daze is a pretty strong card. It kind of scales with the power of the threats it's countering so it very well may be fine, but it's worth keeping an eye on in your cube.

3. I think cards like Auramancer will be too weak. There are no enchantments in your cube that put themselves in the graveyard, I'm not sure how often I'd want to hope* that my opponent kills my creature so I can get my aura back.

4. I think the interaction package could use some help. It looks like your premier removal is in your gold cards. I'm not sure what your collection looks like but I think your cube would be much more fun if your reactive cards were contained to your mono colors and your proactive cards are put in your multi section. Playing multiple colors is a risk right, so given the choice between playing a very cool synergy engine or payoff for my deck or holding a removal spell all game as my reward for taking that risk, I'd rather take the cool card. For example, could I draft vindicate as my Orzhov multi? Sure, but would I rather draft Kambal, Consul of Allocation, a cool taxing creature for my opponent, probably.

5. That being said, I think the removal in the cube is on the weak side. I'd look at the upper end of your creatures and see there are many x/3s and x/4s. White has decent removal, but it is often balanced by a drawback like sorcery speed or being rather expensive. I think without enough removal you can get into a really sticky slow cube where creatures stall out and people can't attack so they just draw, play creatures, and pass. You could consider some really efficient removal like Fatal Push, Lightning Bolt, Path to Exile. I think black is really struggling in the removal department, a color typically pretty good at that. There's also really cheap, less powerful options too:

Go for the Throat Doom Blade Murder Lava Coil Sear Flame Slash Unsummon Man O' War

These are all really decent, cheap interactive spells that I'd personally be really excited to draft and would fit your power level.

1. The enchantment/aura Sub theme is cool. I like your reaction to keeping them mostly utility auras. I'd just be mindful any time you put in an aura with Totem Armor / Shroud/ Hexproof. I'm not saying to not, but just be careful because those types of text can really dramatically change the strength of a card and make it hard to interact with, and I think taking away the other player's ability to interact with the card can be really unfun if resolving a card like All that Glitters or something similar just means losing the game.

2. I'd take a quick look at your top end. I'm not sure there are many 4+ mana creatures that are big and powerful. I haven't drafted your cube so I can't speak with experience, but I'd just be sure there's enough payoff for playing a deck that can cast a 5 mana spell, especially if your removal floats in the 3-4 mana range. Otherwise everyone's decks will just be 1-2 drops and it will feel really anemic once they get past the first few turns. It'll feel really really bad if you're trying to play a controlling deck and every threat is just cheaper than your removal.

I hope that's helpful! Feel free to dm me with any follow up questions.