We could suggest to users who've just sent funds (to an address they don't own) to replace that "spend" and direct them to a pre-filled Trade page (amount/asset) on the Send success modal.

The idea would be to promote more trading and a small quality of life improvement by helping users replace the exact amount easily.

We could also offer two choice, Trade or Buy (with fiat), both of these can be prefilled I think with the upcoming new ramp UX.

It's a relatively common practice for Bitcoiners to do this when they spend BTC, but I guess it can apply to most non-stablecoin assets.