That is a great route you have put together Tomek but much of this area remains closed to tourists - long after the horse has bolted, so to speak - following the 2003 mass kidnappings which unfolded all around there.
It's not so much a list or ergs as a list of restricted places, some which happen to be ergs.
If you get to Ilizzi you could take A4 off the Fadnoun, then follow A7, and from Tourha Pass (A7/KM357) cut NW to Garet, over the top and so down to In Ecker or up to Arak for fuel via Sli Edrar (very nice rock) - or carry on down towards Ideles on A7 (also v nice run) then, south of the Green Sign, take the red track on the Mich map that hooks under the Tefedest. When clear of the hills you can curve back NW cross country towards In Ecker for fuel.
From In Ecker what we did a year ago was follow A12 to Amguid but cut off west through a nice little pass before Tidikmar to some dunes, and then work our way NW to Sli Edrar, close to the road and then up to Arak for fuel.
From In Ecker or Moulay or Arak there are several ways into the Ahnet on the west side of the TSH to bring you up to In Salah or wherever you like.
Or from Arak there is the old Hoggar piste via Tadjemout oasis and another big guelta to In Salah; a quick way of getting north not on the TSH.
Opposite Tadjemout on the W side of the TSH is Erg Mehajebat, big dunes. Accessible x-country directly west from Tadj passing a big dune.
There are some pix and a map of some of these routes here:
Desert Riders Tour - Sahara 2008
I especially like the white granite sands and outcrops around Garet, Sli and Tesnou ('Elephant Rock').
There is still a lot to see and do out there, even with the restrictions. Alg is a big country.
Ch