On a whim, I applied for a soft pull CLI again on my Capital One Quicksilver card tonight. Approved for another $2K increase and a new CL of $30K! 
For years, I slowly grew my Capital One Quicksilver but it was a tedious process that usually involved moderate sustained spending. It started out as a non-bucketed Platinum card with $1K limit in 2009. Finally >in March 2020<, I reached my goal of $25K on the card and thought I was done. (See the link for spend and other data points.)
However, imagine my surprise when they gave me additional $1K CLIs to $26K, $27K, and then to $28K in 2022 without significant spending. 
Those also occurred with less than six month intervals, breaking another rule that I thought applied to Capital One CLIs. After a few denials since the last one, they approved me for the $2K tonight after a little over six months. (All of my CLIs have been initiated by myself, not automatic.)
For data points, in the last 12 months, I've only have five statements post a balance. Those balances were mostly low at $90 to $200 with only one at $500. For whatever reason, this spend is considerably less than what I'm accustomed-to for a successful CLI.
Hope these helps others who are hopeful for a Capital One CLI.
congrats on the continous CLIs!! i want to be like you when i grow up LOL!
