I found taking too much belongings is a frustration so I don't even use checked luggage at all. Very occasionally I might throw my "daypack" into cargo so it gives my back a rest and I just carry my small man-bag onboard that has my camera. So the extra checked luggage and carry-on doesn't apply to me. Priority stand-by and boarding also doesn't apply to me. I might travel 2x overseas at my own dime to somewhere for a break, at a time maybe 10-14 days each. So it's not like I am needing stand-by prioritisation to get back to work ASAP or if I my flight is affected.

Carting my stuff around myself in the city after I checked out of my room is a hassle and it waste time (hence I travel light). I guess I might occasionally use the showers in the lounge where available esp if I have an evening flight which is often for Asia back to NZ.

I know friends who travel in peak season ie to be with family in the Christmas and New Year period and with Asia - Chinese New Year and other type of festivals like the mid-autumn festival. If that was the case then I would already be purchasing the not so discounted fares and I could accrue points but for me, I have the option to travel in offpeak and never travel in peak unless something else happens in my life.

Gold status with Asiana might provide 5-10% bonus miles but that's rather a drop in the pond.