With all due respect (and I mean that most sincerely) your reply is silly but I feel I have to answer. Why do you feel the metric system is superior to the Imperial system? If you take your tinkering with the rules to its logical conclusion eventually you'll get someone similar to your good self coming on a forum asking why we can't make these silly 8m x 2.5m dimensions 10m x 4 m...we'd have fewer draws after all. And hey while we're at it let's get rid of those pesky goalkeepers.
Additional time (etc) system? To be replaced by sigesige's sin bins, rolling unlimited substitutions yadda yadda...? It seems there is little you find acceptable in the rules of football as they stand: from the dimensions of the pitch to the size of the goals; from the playing time to the use of indirect free kicks. So my dear silly friend, my silly question is this..... Why continue to watch a sport you find silly or stupid or in need of a massive overhaul? Why not stick to futsal? You may think all your suggestions are sound. But in reality all your suggestions are frankly mad and will change football into something unrecognisable. You are not the first to have suggested mad rule changes. In 1994 when the Yanks were hosting the World Cup there was some talk about abolishing the offside rule and playing four quarters instead of two halfs. The guffaws of derision that followed from lovers of the game made the stick you take on here look tame in comparison.
So... silly as it may seem, I am quite sure I'm not alone in wishing the rules of football to remain as they are. The occasional "tweak" may be called for as the game evolves... like the pass-back to the gk rule that disallows the gk from handling a pass-back. Anything on the scale you seem to be advocating would simply turn football into your beloved (and more palatable to you) futsal.
I have nothing against futsal.
I have nothing against cats..... but I'm not going to perform surgery on my dog to turn it into a cat.
I have nothing against motorbikes.... but I'm not going to set about my car with a chainsaw and some gaffer tape to turn it into a Kawasaki.
So see all this stuff about sin bins, goal sizes, running times etc? Gonnae no dae that?