Hi,
in no particular order:

a)ec-card: not 100% sure what you mean here, but isn’t that down to whatever payment gateway you use whether or not they accept ec-cards?

b)pre-order: i’m working on something that will let you do that. just got sidetracked with other things but shouldn’t be too much longer

c) faxgateway: as there are carrier costs involved there isn’t really any generic solution that would work or be costeffective for everybody. However, there are quite a number of email to fax gateways around which you could use. Which one is suitable depends on your locality.

d)ePrint: what exactly do you mean by ePrint ?

e) Rating: there are already a number of rating plugins available one/you could use.

f) comments: just enable them, no ?

g) geotracking: doable i guess, but doesnt really help in avoiding fraud as geolocations can be faked (or even turned off)