Hi Tim, my reformed neighbour in Africa

I am so glad that you have suggested this.
From the research that I have done, the 1650 Psalter seems to be the most faithful Psalter for singing in English, and while I don't mind the mildly antiquated language, it is perceived as a challenge for many who do not have English for a first language. I agree that it would be better for believers to be singing "refreshed" Psalms, rather than "anything goes". My family has been tremendously blessed by the use of the 1650 Psalter over the past year. It's simplicity of structure has provided us with the invaluable blessing of quickly learning how to praise the Lord, while simultaneously memorising the Word.
I would be eager to assist you in making minor changes to the 1650 Psalter, similar to your proposal above, so long as we agree to keep it within the Public Domain, and also involve some folk with a proper knowledge of biblical languages. We should be careful not to remove the distinctions between singular and plural that words such as "thou" and "thee" convey. Removing most of the "eth" should not be a problem though. It goes without saying: it is VERY important not to "dumb down" God's Word, though this process. Some of the better know Psalms, such as 23 and 100, might be better left as is.
Perhaps the way forward would be to start a small mailing list/Yahoo Group. In the interests of efficient discussion and decision-making, the group should not be too large. As soon as we have a reasonable sized group (ideally 12-or-so), we can divide the work, by giving certain Psalms to certain people. I would also strongly recommend the group should be limited to members that are committed to the principle of "Sola Scriptura". Even if we revise only three or four Psalms a week, the task should be complete in about one year. If it takes two years that is also fine. God-willing, the sooner we start, the sooner we finish.
This project might also later lead to a Psalter that includes melody in sheet music form. Free software such as Rosegarden is capable of importing midi files, and arranging the words.
What do you think?