I sadly sold off the few troops I had retained from second edition (some very nice mordian and catachan infantry) and my leman russ and chimera were donated to the Orks and Inquisition respectively.
However, the release of the mantic corporation set I finally caved in and revisited the IG. I bought a couple of their army sets, enough to give about 100 assorted guard. Added to this were a few GW elements - a valkyrie, LR, LR demolisher, hellhound and manticore, all magnetised for alternate loadouts.
So far I have assembled and sprayed all the vehicles with the infantry mainly still unassembled. My plan is to go at them when IG get a 6th ed update, which should give me a necromundan infantry platoon and steel legion supporting armour.