I'm not sure if this was already informed but when I went to AMEX site to try the prequal, I saw it said 'special offer for you' for most of the cards. But it was there for a while like 70K for platimum, 50K for gold, 45K for Green etc.,
What I never saw before was 5% back for 6 months upto $350 for Cash Magnet and $300 for BCP and $175 for BCE.
That offer for the Cash Magnet would require $10K of spend to hit the $350. If you have a lot of non-cat spending, it's not bad but the $200 for $1K normal Cash Magnet SUB and a second card with a $150 SUB would require a lot less spend.
The BCP and BCE offers have been incognito for awhile -- I actually signed up for my BCP last month with a $300 incog offer.
I'm not surprised. Some lenders are heading more towards longer term spend offers vs a quick spend $500 and get $100, etc. These types of offers encourage longer term use of the card, even though mathematically you are usually better off with other offers unless you plan to spend a ton on the card.
I do have ~10k expense each year that doesn't fall into any category of my cards. Sadly they don't take amex, lol.