Currently have these Chase cards:
Southwest Premier
Slate
Freedom
CSP
CSR (just approved today)

Thinking about product changing the CSP to Freedom Unlimited and the Southwest to another Freedom. Thoughts?

Annual fee just hit today for the Southwest and the CSP will be hitting soon as well. If I product change these soon I can probably have the fees refunded. That makes my only annual fee card the CSR. I can't think of a good reason to keep the Southwest card around with either the CSP or CSR in the wallet (I got the Southwest card before the others, else I probably wouldn't have bothered).

I can definitely make use of the Freedom Unlimited to fill in the gaps. For the regular Freedom, the only quarter where I'll be able to exceed the $1,500 limit is the Amazon quarter, but that's still better than nothing and it has no annual fee.

Any reason to keep the Southwest card? I normally fly with them in the country, but I normally buy tickets with points so the extra bonus points of buying tickets with the Southwest card doesn't really apply to me.