When I started out, I had an AU on a small Cap One QS, a very small Cap One Plat, and like 2 Comenity clothing cards, all 1k or less. But I used them every month A LOT and PIF but left like, ... 5% util just in case. Suddenly, I got 2 in mail offers. One for a Citi Diamond Pref and the other for Discover IT, both BT. I waited maybe 2 months to see if the offers kept coming, and they did! I was SO psyched! After asking Cap1 QS for an increase one drunk night (and all 3 of my scores all just over 700), I thought "do it!" I called Citi, got $5500 immediately!
I almost died!
Next week, I tried Discover for BT IT, and got $6500!
So, ... yeah! Build it up! And look around at cards online, like an invested shopper (at least, that's what i did) and eventually they all start to knock on your door. HARD. But you have to use them often, PIF (but leave a lil something to work with) and get varied cards, from like many good banks. That entices other banks to offer (usually). Right now, I just PC my Cap One QS to Venture, My Citi DP is at 14k after my SP CLI night before last and I want to flip that towards either DCash or Thank You Points (until I catch up to that Chase Dragon ...).
So, yeah. I used 2 BT cards to get past 10k each, now after 2 years, I am starting to plan for points.
Just IMHO. 😅👍