What should it be good for? I tried it, was helpful against slow Decks until Assasins Trophy entered Modern. It is bad against control due to Terminus and Cryptic Command. An well timed TitI will bounce your complete Board, against other Decks you wouldn't need it.
Some Sideboards now show Godhead of Awe. I not sure that's a good Sideboard choice. It doesn't weaken the fast aggo Decks as far as i know. Against which Decks you would use it?
I think your opinion about Experimental Frenzy is correct and will be the way to go in the future. I test with the following 75 actually, with good results. Frenzy ist mostly game. I tried the following:
What should it be good for? I tried it, was helpful against slow Decks until Assasins Trophy entered Modern. It is bad against control due to Terminus and Cryptic Command. An well timed TitI will bounce your complete Board, against other Decks you wouldn't need it.
Use these Slots for somthing more usefull
Main (60)
4 Arcbound Ravager
4 Blinkmoth Nexus
4 Cranial Plating
4 Darksteel Citadel
1 Etched Champion
3 Experimental Frenzy
2 Frogmite
4 Galvanic Blast
4 Inkmoth Nexus
2 Memnite
1 Mountain
4 Mox Opal
4 Ornithopter
1 Plains
4 Signal Pest
2 Spire of Industry
4 Springleaf Drum
4 Steel Overseer
4 Vault Skirge
Sideboard (15)
2 Ancient Grudge
2 Dispatch
3 Etched Champion
2 Ghirapur Aether Grid
2 Rest in Peace
1 Spellskite
2 Thoughtseize
1 Wear // Tear