The real future will be downloads, but man what a time it is. Actually the groundwork is being put in place, you want it here faster? Well support blu-ray and also get a HDTV.
Okay the 2nd thing is a no brainer. The first thing? Look at Profile 2.0 of Blu-Ray which supports BD Live. Optical media will give the way to downloads, but this is the hybrid cross over. You want that flying car? Get the hybrid.
Now I only endorse getting the PS3, as it can be updated to profile 2.0 and others at the moment have not been shown they can.
Buy more discs, companies learn to use codecs better. Downloads right now (apple TV, HD on demand) are usually rentals, and don't let you keep the movie to watch whenever. Content on demand you usually keep are trailers, and sometimes TV shows. I think Apple has the greatest chance here to unify all downloadable content with their iphones and ipods.
Oh and there is a difference between 720p 5.1 surround and 1080p 7.1 dts ma. People who whine and say thats a niche market, need to look back at themselves, as HD programing itself, while growing, is a niche market. Joe 6 pack still hates those black bars on his movies because he/she/it think its seeing less.