> (2) want to make minor changes to existing ETFs This is exactly the use case I've wanted for a long time -- I'd much rather just park most of my money in an

> (2) want to make minor changes to existing ETFs This is exactly the use case I've wanted for a long time -- I'd much rather just park most of my money in an S&P 500 index fund. But there are some companies there whose business practices I just find scummy; and if I own stocks in that fund, those companies will be doing those scummy things in my name and for my benefit. I realize there are "ethical" index funds, but somehow their senses of ethics and mine don't match 100%. I'd very much like to be able to say, "The S&P 500, but not X Y or Z." I'll definitely be looking into this.