Why make tons of VERY expensive changes to pitches around the world? If you think it's cheap to take out a set of posts and move them, or take out a set of posts, throw them in the garbage and buy a new fancy WR set of posts, you must be dreaming. 99% of pitches will no longer be up to the standard set by WR, and the 1% will be professional grounds. I doubt my city would accept a request to move our posts as we barely generate revenue for them. If we did want to get them moved, our club would fold as membership dues would jump through the roof and we wouldn't have players anymore.
As well, Browner, I'm not sure if you've taken a glance through the WR law book recently where it specifies in goal length, but an in goal can vary from 10m to 22m. I've yet to see a set of "wishbone" posts that have a horizontal beam that's 22m long...CFL and NFL ones are 6 feet (just under 2m) behind the line and trust me when I tell you that they wobble when you touch them. Imagine making that 10x longer?
A much simpler solution would be to re-write the law to say something along the lines that the goal line runs through the post and post protectors instead of the current law that say it that the post padding and post are part of the goal line.