you could pack some serious weight in a box then and postal inspectors would be like hey whats that oh it smells like weed but it looks like powdered turtle shell isnt that suppsoed to help your dick grow this guy must have a small dick and then theyd leave your shit alone
It would damage the trichomes, and wouldn't pack much smaller, Buds are beautiful, ground ganja looks like shit, stinks more, and dries out quickly
In a spliff, you would keep sucking powdered ganja into your mouth. And your grinder would be rendered redundant.
Apart from that, it would be the best idea ever.
OR you could remove the THC-containing trichomes, compress them into a kind of concentrated briquette, and post that instead. I think some technologically advanced countries may even be doing this already. Like Afghanistan and Morocco.
Look out for a new product called "hash" or "hashish". I predict it might catch on with early adopters.
But you obviously know your weed. They can't compete with cutting-edge, blue-sky thinking like that.