Ha! You beat me to it. You can also copy and paste to many images at once.
1) Select the image with the adjustments
2) Right-click and pick Copy
3) Click Done to leave Edit if you are in Edit
4) Select other images and right click on them and pick Paste Adjustments.
I don’t have sorting by tag planned for 3.0 but it’s certainly possible. However, you will be able to filter by tag, which should give you a similar ability.