The new feed_fetch() function comes with a impossible-to-modify refresh rate set to 43200 secs that equals to 12 hours... It's a little too long, ain't it?
It would be nice to pass this value to the function changing it from
<?php $feed = fetch_feed( $uri ); ?> to
<?php $feed = fetch_feed( $uri , $refresh_time); ?>
Don't you think so?