Thanks for the answers guys.
.....right the shadow is a normal MM Shadow. Non customizable up until.... it gets new HD.
I understand the logic of following the Greater Shadow path but that is not necessary. Nothing under RAW suggests that one should.
Of course, in the beginning you have to take the standard MM shadow, without tweaking it, but once you get new HD, there's nothing stopping you from allocating the new ability point and feat as you like. Don't forget that the highest the shadow can get, (with a 20th character level shadowdancer) is 7HD. So no worries about that 9HD greater shadow....
Unfortunately (for me), I already knew about Libris Mortis and its nice collection of feats, as well as about ghost touch weapons and armor.
Stupid of me, AGAIN, to not tell you guys what I I've found on my own already...
...But that's about it. Libris Mortis and ghost touch weapons and armor....
and the monster feats in MM...which are not interesting for this creature.
I was hoping that someone had tried something unique, or had found some useful feat, some interesting item from MIC.... I don't know... some interesting combination... whatever....
suggestions?
Ok.... Even with what we've got, what is the best feat/item in your opinion?