This is an interesting question because I have just turned off all but one of my automated trails and am doing more manual curation to the point of doing a weekly collection of my favorites in a week this year -- got tired of being at 60 percent voting power for stuff I never even read, and might not have even liked.
I am one of those people who will do what I am doing at whatever level I am in. I wrote every day when Steem was going down and collapsing, and I have written every day through the bull and the bear ... so, if I had 500K to work with, the posts I like would get a bigger vote, and when my schedule allowed I might seek more things out to vote ... but whatever I am doing, I do, with 50HP or 500K HP. Right now I'm focusing on manual expanded curation, so, it is what I would be doing with 500K.