[Elk]

Simplicity...

I want a server that is not too crowded, that catches my attantion with ease again!

The main focus should be the fun in playing, not the mere intention of bringing up a server and scratch a living with it. Most games fail to get that point and transmit the information to the consumer! So on one side, its good that you're asking what players want...but that does only satisfy them temporarily, and it covers their current needs.
You should invest energy in planning way further, not only speculate, but also plan empirical.

As for myself, to answer your question, I think I would like a server to have fun on, with a big variety of minor/major quests that are designed with depth, aswell as simple ones that are not as rewarding as harder ones (repeatable) and professions that are balanced (gathering plants, profession quests, and so on...)

Ok now I lost my point....dumb ADD