I'd argue that if you have enough traffic to look for 1-2% improvements, you have enough traffic to do basic segmentation and to start measuring value. That sa

I'd argue that if you have enough traffic to look for 1-2% improvements, you have enough traffic to do basic segmentation and to start measuring value. That said, I agree with your greater point that you always need to make sure your tactics are aligned with your situation and strategy. For instance, if you're still seeking product/market fit, don't worry about micro-optimizations; just follow best practices for the big items and optimize them later.