I started building slides in present mode first and it changed what I actually fix
Sounds backwards but hear me out. I now design in present mode before I touch the edit view much.
For years I built decks the normal way, zoomed into the editing canvas, nudging boxes by a pixel, admiring text I was reading from 30cm away on a big monitor. Then I'd present it and discover the body text was unreadable from row three, the chart I was proud of was a gray smear on the projector, and the slide that looked balanced was actually bottom-heavy on a real screen.
The fix was stupid and obvious. Build a slide, hit present, walk back from the screen, look at it the way the room will.
What this catches that the edit view hides:
Text size. What looks fine while you're hunched over the keyboard is tiny in a conference room. If you can't read it standing up two meters back, nobody in the actual presentation can.
Contrast. That light gray on white looks elegant on your calibrated monitor and vanishes on a cheap projector or a glare-hit TV.
Clutter. In edit view your eye forgives a busy slide because you built it piece by piece and know where everything is. In present mode you see it cold, the way the audience does, and the four bullets you thought were fine are a wall.
The whole point of a presentation is what the audience sees, not what you see while making it. Designing in the view they'll never use was the mistake.
Anyone else flip their process like this, or is editing-then-checking working fine for you?