HBP, I took what you said into consideration and altered a R/B list I mocked up slightly changing the count of some spells and adding dangerous wager. This is what I plan on testing This weekend:

2 Reforge the Soul
2 Past in Flames
4 Burning Wish
4 Gamble
4 Manamorphose
4 Thoughtseize
4 Dangerous Wager
2 Faithless Looting
4 Rite of Flame
4 Seething song
4 Dark Ritual
4 Cabal Ritual
1 Empty the Warrens
4 Lion’s Eye Diamond
2 Lotus Petal
4 Badlands
2 mountain
1 swamp
4 bloodstained mire

1 Reforge the Soul
1 Past in Flames
1 Grapeshot
1 Tendrils of Agony
1 Empty the Warrens
1 Ill-Gotten Gains
1 Smash to Smithereens
1 Pyroclasm
3 Lightning Bolt
4 Pyroblast

I agree that reforge isn't as good against blue but with the thoughtseize I suspect it will have better game. I knew a mono red build wouldn't be optimal but I wanted to see how things played out. Adding black gives access to more efficient rituals and discard. I really don't feel like blue is necessary, I feel it convolutes my original idea. I prefer to have the deck play how I originally constructed it.