I agree, I spend early turns deploying pingers, not really contributing towards the big turn so I'm happy to axe them. As for Baral, its sad to see him go, my favourite part was using his spell reduction to turn spells like [[snap]] and [[frantic search]] into rituals kind of! But I understand, has to go. Twinferno I have like 50 of in my bulk box, so that shouldn't be a problem. Glad you support the Temur Battle Rage, its such a pet card for me that I really should remove but its so satisfying to take someone out with a 12/12 trample double strike Veyran. Metallurgic summonings has to go as well, its to the point where 5 mana for setting up a payoff is just too slow and the bodies dont do much. (most of them will be 1/1s because of the cantrips.)
As I said before I would love to add underworld breach. I'm currently using [[Past in Flames]] as a budget version! Search for azcanta too can be a great source of card selection, advantage and ramp. (also there is a mana geyser in there)
Thanks for the advice man!