Yet I still find it very akward..

What you're saying means you delete all the coordinates an replace them with 0 0 0, which is indeed fast, but in most cases you'll need to change just one coordinate and the input field will look like this 131.25 403.02 312.45
- to change something in real you need to invoke a command which will invoke straight snap and other staff and through these you need to move to the input field, select only the portion you need, guess, that the postion is exactly x or y or z (cause no id next to corrdinates exist) and then make the nudge you need, and that not all, you're still in the command which you need finish..

and that all instead of just selecting an object and tweak its coordinate on the fly