Thanks for the CFI route suggestion. With all due respect, I would rather not engage in the argument CFI-for-time-building vs. other-time-building, to me is sort of single vs. twin debate. Defensible positions and decent people on both sides.
As extra background, my aviation track is not airline-focused, but rather business/corporate. The ATP would be "nice to have" down the road, is required for jets under 91K & 135 PIC and for 10+ seaters under 135. I understand, of course, the difference between paper qualifications and actual minimums etc.
CFI is still an option, and I'll make that call within a month or so. But I'd like to make sure I exhausted all other alternatives.