Everybody is looking at the big new Red cards and saying "This doesn't go in the mono red deeeeeck! It's too slow/expensive!" Am I the only one seeing potential for a Big Red or red/gruul tempo deck here?... I mean look at these 3-6 drops...
Also if you really wanna enable Delirium for some of this stuff which might be tricky mono red, green seems like the way to go for stuff like Cache Grab, basically only need 1 of these and by the time it matters you'll have Delirium
Oh and maybe it's not the end of the world to not have a bomb in the 4-drop slot because there's great removal you can play for 4 OR you can Impending the Boilerbilge Overlord... Honestly I'm excited by these cards.
Shit you could add ramp on the green side and get your 6 drops out faster. The red and green 6/7 drops in this set are kinda nuts.
And most of this shit has haste naturally! So you could probably easily find a better 4-drop than Enduring Courage, especially if you go Red/Green or Red/Black, Bloodletter would be hard at 3 black pips but, these are just off top of the head examples there's probably a lot of potential here imo
Playing all this stuff on curve from turn 1 to 6, with stuff like Pyroclasm or Rollercrusher Ride for big removal could be brutal af