I'm very well aware of industry trends. Your points about hydrogen leaking are not actually accurate. This doesn't negate the advantages at all, and as vehicle

I'm very well aware of industry trends. Your points about hydrogen leaking are not actually accurate. This doesn't negate the advantages at all, and as vehicles get larger, the advantages become even more pronounced. Oxygen-rich is used on Russian engines, which are some of the best engines ever made (although they haven't improved on them much in the last couple decades). Commonality of stages is more important at lower flight rates since you have to pay for amortization of the greater development costs. I like methane/oxygen. It is a very good choice. But I also don't buy into the hydrolox phobia that has become popular. Hydrolox is still a very good choice. (I think that SpaceX and Blue Origin are completely right for picking methane/oxygen for BFR and New Glenn; I'm speaking even more long-term...)