Drop Chandra Ablaze and input Koth of the Hammer . He can help mono red mana ramp or deal 4 extra damage and his ultimate is much easier to pull off. Input Ghost Quarter for Encroaching Wastes because you could pull that off at any point in the game. Searing Blaze or Arc Trail could be viable burns to clear weenies and burn player. Brimstone Volley is awesome when you can hit for Morbid. And while it may not fit the flavor of the deck, Shrine of Burning Rage has always been in my mono burn decks, because it can just be that extra damage you need to get the job done and you'd be surprised how fast it gets counters in a mono red deck. That being said, that's a lot of suggestions for one deck. Choose what you will. +1 for a red deck with personality.

Ghost Quarter seems bad to me... is it good in modern? like ... destroying one land that he can just search for seems pointless.. Tectonic Edge seems ok because its cheaper... but i dont want my opponent to have any lands.. let alone more than four... is Encroaching Wastes really that bad? i just thought it would be good to activate during one of those turns where u dont happen to draw a LD...

I like Ghost Quarter to blow up their nonbasic lands and it doesn't have a casting cost. Them getting a basic land may seem bad, but think about blowing up Eye of Ugin , Blinkmoth Nexus , Inkmoth Nexus , Glimmerpost , Celestial Colonnade , for example, a basic land is not a bad trade off.

Encroaching Wastes isn't bad, per se, but if you have to have 4 open mana to use it in response, you slow down your other spells in mid to late game.

you've sold me on the Ghost Quarter :-)

You need Wake of Destruction

Lightning Strike is hardly even standard quality.. In modern it's baaad

replacements?? magma jet?

I see Lightning Strike in standard a lot (I mean its just Searing Spear ), it just depends on the deck, the problem is that MUD and MBD are just so strong, but RW Burn is still great, and very very fast.

But yea, Magma Jet IS better because it allows you to set up.
Melt Terrain and Poison the Well are your weakest spells probably now. Icefall is SO much better just because you can get it back.

Icefall is in your grave, Swing with Fulminator Mage if it were to die or be blocked, you sac Ghost Quarter , they fetch a land, then sac Fullminator to blow up the new land, pay RR and get Icefall back. SO solid!

I recommend just proxying the deck and playing it against some friends and strong modern decks. Just to get a better feel.