Feedback from Roger Ver:
Electron cash should also stop forcing people to back up their seed before they have any funds in the wallet at all.
How bitcoin.com wallet does it: user can make a new wallet and hit the ground running, only it has a nag box that encourages user to perform backup process.
How it could be done (sketch):
Ok, sounds good. So if backupnag=1, prompt on wallet window open each time?
for reference, the bitcoin.com wallet nag is quite unobtrusive

This is the initial wallet creation ask about backing up

Wow.. really nice resource. Thanks for providing these screenshots.
I can get started on this right now or today. This is good. We can do similar.
Welp.. Jonald nixxed this whole idea today in Telegram, so will put this on the backburner.
FWIW I started working on this but if Jonald is against it.. that's that.
Here is a screenshot of what I had so far... the initial approach wasn't quite as comprehensive as bitcoin.com's whole process, but it was a step in that direction...

I'm going to opt for the conservative approach for desktop and say that we should stick to tradition and require the seed backup immediately. This is safer for the user and simpler.
For mobile, I'm fine with whatever approach including no seed backup, because for mobile I think people have less funds and the weight of those funds is less important than speed of onboarding.
"stick to tradition" <-- very un-Aquarius of you. You must have some planets in Capricorn or Taurus. :)
Almost everyone skips this step anyways by just using copy/paste or a screenshot. Why not save everyone time so they can start having some fun ASAP?
We could provide a nice new icon for the seed, for example:

Imagine a flashing red "X" over the seed
Everybody does indeed skip it. And yes... something like that would have worked too. A red flag on the seed icon, etc.
We did this for SLP. Jonald is against it for regular -- so I'm closing this.