So UR-Giants in one form or another seems to be one of the major decks emerging from the new set.
I am still grinding along, my love for off-beat decks probably holding me back. (Also I should dive into limited at one point).
My latest jank deck for Standard with some success is:
4x Speaker of Heavens
4x Light of Hope
4x Charming Prince
4x Griffin Aerie
4x Luminarch Aspirant
4x Revitalize
4x Angel of Vitality
4x Skyclave Apparition
4x Angel of Destiny
20x Plains
4x Radiant Fountain
Straightforward Plan.
I suck at tweaking numbers, so I like to run 4x decks, except is glaringly obvious that you don't want 4x. If you guys have some input, I'd like that.
I have done genuinly zero playtesting with the new set, but some general ideas for monoW from sets before:
Upgrades:
Run at least 2 copies of Castle Ardenvale and Emeria's call each over a few plains. That is as close to a straight upgrade for MonoW as it gets.
I am not big on 4x mainboard Skyclave, since sometimes you run out of targets or lose to a 4 mana+ cmc card you can't remove. I would replace at least one copy with Banishing Light.
Righteous Valkyrie is currently the strongest Angel in the game. And she fits into your Lifegain/Angels tempo gameplan. Run 4.
Strategy Changes:
I am not sure if Luminarch Aspirant does anything in your deck currently, besides comboing well with Speaker of Heavens. She is neither lifegain nor angel strategy, just beatdown.
If you want to make the deck slower into white midrange then Elspeth Conquers Death is a really sexy card.
If you go deeper into lifegain tribal then Heliod, Sun Crowned is a must have 4x for you.
2x Legion Angel in the mainboard and 2x Legion Angel in the sideboard is really good for angels. You can do 1x main 3x side aswell for BO1.
In general this seems to be three strategies at once, White Weenies / Angel Tribal / Lifegain. Since all of those strategies overlap somewhat it can work, but I suppose the deck will become stronger when you trim it down to 1 or 2 strategies.
Righteous Valkyrie should be the glue to make this work, as she is powered for constructed and boosts all three strategies at once.