I'd say ... write yours. The one which satisfies your needs and your needs only. There are dozens of extensions which change the new tab page - I didn't like a

I'd say ... write yours. The one which satisfies your needs and your needs only. There are dozens of extensions which change the new tab page - I didn't like any of them, so I hacked a quick one myself - it took me 2h? 1.5h? It was fast and I didn't need any complicated features - just a CSS-styled table with fixed list of links and a clock.