Sitemap frequency default too long, can't change it globally

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Hi there

The sitemap feature lets one choose to list all posts or pages in the xml, but it requires that you choose the frequency for each one and the default is one month, which is far too long for new pages and posts.

I would want the frequency to be daily for everything and without further manual intervention. The sitemap should just generate itself daily, with a daily frequency, and with all new content and updated pages on it.

If you wanted to get tricky about it then you could possibly set the frequency for old pages and posts to a longer period, but any time a post or page is updated, it needs to go right back to immediate indexing.

In any case, setting the frequency for every page and post by hand is extremely tedious, especially when it is so long by default.

Anything to improve this would of course be greatly appreciated.
Thanks!
ROb