Here is a game that I played against a higher-rated opponent’s Center-Counter defense and won. He sort of gets generous with his attack. I can say that where he played 15. a4, if instead he had played 15.b5, I might have tried BxB followed by Nxb. Of course, he could develop more since my attack is not particularly emminent itself (and he should be noting it from my perspective).
Anyway, the key thing here is that once I had accepted his free piece, that I continued to “expand”/strengthen my position. Really a Nimzovitch idea along the lines of what he referred to as prophylaxis.
The important thing for me is that I didn’t “have a garage sale” once I got ahead, but instead expanded the scope of my position, or ‘infrastructure’ as Obama might call it. 😉