Regarding the
IW theme, I think that it covers it quite well. The Warpsmith has his uses and I feel that people are shunning him too much. Provided you can protect him, he can really be a force multiplier equal to a Sorcerer
HQ because his powers can't really be "stopped", so to speak.
Would probably trade the weapons around with the
CSMs. Plasmas in the rhino, flamers on foot waiting to receive charges. Even 2 flamer templates on nearby terminators that want to Deep Strike ill help the bolters out.
I run MoTz terminators and so I usually survive to get my power axe hits off, but the swords on your terminators are a nice fit. Two units of terminators are definitely good for 1500pts in 6th Edition, as you probably know by now. Those 3 hitting at I4 will help.
For 1500pts I think that this is a fine list. This army really shines if you roll "Master of Deception", wouldn't you agree?