As one who fairly loathes Material Design (especially on mobile), I was hoping cketti would fix what's wrong with Thunderbird, rather than Thunderbird ruining the best Android email client out there, which is now looking like an almost certainty.
I really hope there's a good fork.
I was using Outlook on Android, but I was finding it pretty heavy/slow. Looked for other alternatives, like K9 and Spark, and choose Spark exactly because of the UI/UX.
So here's one potential user who would welcome a more modern interface.
Maybe you should give it another shot – they changed the UI quite recently (a year ago?)
That's pretty spot on. Another example is Eclipse. I swear by it, and it handles everything for me. But when I show it to someone the first question is when did it last updated, because it looks very old.
Eclipse releases a new version every three months.
I'm going to go out on a limb and disagree. I left K-9 ages ago, because unfortunately for ages it had no Material Design.
These upcoming changes are a modernisation. That's good for mass appeal. Mass users don't want an app which looks antiquated.