Come-on, guys, you sound like a bunch of old fogeys: "Not practical", "not recognized in law", "how expensive", ..... and you're all younger than me!!!
If the pioneers of aviation had this attitude, do you think we would be flying today?
Sure, there are a lot of details to work out, and even then this may never work. In fact, most new ideas end up in a dustbin. But at least give it a chance in this forum! No one is committing to invest money in this, it's just a disussion!
More seriously, though, one of the key ingredients in innovation is the search for ideas. In this phase, all ideas are spewed out and recorded as participants think of them, with new ideas built on previous ones. They are not analyzed or disussed at this point. After the fountain of ideas dries up, the group sorts and sifts through them, until something workable can be formulated.
Here's my Christmas message to you... keep an open mind, do not be constrained inside a box!
"In God we trust, everyone else bring data"