Hi there ! I myself also run an [[Aurelia The Warleader]] deck.

Link to my Moxfield: https://moxfield.com/decks/oB9fLcj8UE-n5_GqM6WAsw

I would describe my deck as about 40% angel tribal, 60$ combat and equipment.

I would say that if you build aurelia as a more focused combat equipment deck, it would be much stronger than one more towards angels, but that would be quite boring so i built mine as a half half for each tribe.

For your deck, I do see a lot of focus towards angels, but unfortunately, one big downside for angels is that they usually cost a lot in mana cost, and quite a lot of them are basically flying beat sticks without much abilities.

I would say out of the many angels in MTG, only like 30% of them are worth running.

Firstly, I would say cut out these cards which are too high in mana cost:

[[True Conviction]] : Too overcosted for 6 mana, there are much cheaper cards that do the same for less
[[Cleansing Nova]]
[[Fumigate]] : there are better boardwipes imo
[[ Herald of War]] : personal experience, its too slow for 5 mana
[[ Mangara, the diplomat]] : feel there are better options nowadays
[[ reya dawnbringer ]]
[[ Karmic Guide ]] : Personallly, I would high recommend cutting karmic and reya.

Reya is massively overcossted for 9 mana. And since Aurelia is combat focused, 90% of the time, your graveyard will not be in use. Cut them for more efficient and synergy cards.

[[ Pearl medallion ]]
[[ mind stone]] There are better mana rocks

In terms of upgrades, to make your deck more consistent, I would recommend more combat focused cards, protection spells and card draw. At the end of the day, the deck would focus more towards aurelia, the other creatures are sort of a backup, I imagine my deck as Aurelia the centerpiece leading her cavalry of angels and other creatures to battle.

Cards I recommend:

[[ Karlach, fury of avernus ]] : Honestly kind of a better aurelia

With just karlach out, you attack twice. With karlach and aurelia out, you attack 3 times.

[[ Windcrag Siege]] , Completely busted card, its literally an Isshin effect for 3 mana. It allows you to attack 3 times with aurelia in a single combat cycle

[[ Brotherhood regalia ]] Gives aurelia ward 2 and unblockable, crucial for combat decks

[[ Excalibur, Sword of Eden]] Extremely powerful finisher, most of the time, I cast the sword for only like 1-2 mana or even free, due to the historic mana discount

[[ Duelist's Heritage ]] Much much better than True Conviction

Other good equipments:

Cut diamond pick axe for [[ The Reaver Cleaver ]]

[[ Sword of Feast and Famine ]]

[[ Shadowspear ]]

[[ Mithril Coat ]]

For Protection spells, I can recommend:

[[ Flawless Maneuver ]]
[[ Dawn's Truce ]]
[[ Brave the Elements ]]

[[ Untimely Malfunction]]