I was underwhelmed with the existing offering of new tab extensions on the Chrome web store. I wanted a very particular set of features:
Previously I had been using Speed Dial 2, which ticked most of my boxes, but syncing was a paid feature.
After trying about 5 or 6 different extensions I had the idea to whip up my own. Enter: UtiliTab.
It's extremly basic, but it covers all the basics just like I wanted. I've been using it for the last couple months and I've found it very handy. It supports adding/editing/removing bookmarks, changing spacing and padding, and has links to Chrome pages (history, extensions, etc).
There's a few features I would still like to add:
You can download it from the Chrome web store if you want to try it out.