If you want a real upgrade, I swear by the cables that have integrated watt-meters built in.

It's so nice to have fast feedback about how heavily you're using a multi-port charger, to see whether your phone or laptop is charging as fast as you'd expect.

It's a pity that devices don't just report their charging figures. In Linux a lot of laptops have really good power reporting; I could tell exactly how fast my laptop is charging. Phones too know. But devices simply don't deign tell consumers what the status is, what's happening. There may be a fast or regular charge... but it's so much less than the real data. For a lot of devices, the last 20% of charge often goes very slow. Knowing that, seeing that, would be good information, for example.