That is surely a fair wishlist. Yoast is the best Wordpress SEO plugin so far and really helps to make your blog search friendly with those several features that help you better optimize images, posts, pages and structure of your blog.
However Blogger did made some major changes to blogspot blog's SEO like introducing Search Preferences that help you create:
- custom redirects i.e. 301 redirects,
- 404 error pages,
- Robots Header tags that adds a X-Robots-Tag header
tag in the HTTP response.
Blogger has also enabled custom permalinks and meta description functionality for each post. It has covered almost 80% of what YOAST does so not bad. What it lacks yet is the ability to create custom sitemap files for blogger which must be hosted at root/sitemap.xml.
Point to Note:
The only Blogger blog which has a custom sitemap.xml file is http://buzz.blogger.com/sitemap.xml and I don't know why blogger has not yet allowed this feature to all users.
The sitemap file at buzz blogger is well formatted pointing to two sitemap chunks as shown below:
<?xml version='1.0' encoding='UTF-8'?>