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hahahaha I like your description. I believe Homing lightning should be a sideboard card against aggro decks. Replace them with creatures like Wojek Halberdiers or one more Silverblade Paladin one more Frontline Medic and one more Boros Elite Skullcrack should be replaced by Searing Spear . Maybe you coudl sideboard the skullcrack for matchups against life gain, but other than that searing spear is just better. I think the guildgates will just slow you down, and tthe retreats and foundries are good enough for the mana fixing. I'd suggest you consider Stromkirk Noble Hellrider and Lightning Mauler . It feels good to swing with frontline medic soulbonded to lightning mauler on turn 3 without fear. Stromkirk Noble is good i think for this deck because it doesn't have that much of a tribal theme in it anyway. Maybe you could take a look at my deck too, even though it's style is a little different deck:boros-27-01-13-1
Mainboard looks perfect in my opinion :D
But I'd suggest for the sideboard:
I playtested it a few times and i noticed that it could use an extra Mountain and one less Plains . I also think that some more solid main board removal spells would be a good idea. I was thinking that a card:Devil's Play would fit in, because not only would it add some creature removal in its first casting, but its flash back could be used in a late game situation. I also would dump all the Stromkirk Noble and replace them with 3 Legion Loyalist and a Vexing Devil Hope i can help.
Also, Blind Obedience is a fantastic card for sideboard.
Not to shamelessly plug my deck, but check it out for some ideas. Boros: Legion of Ravnica
I highly recommend not playing card:Aurelia's Fury. I tried it and it is far to slow to play in boros without splashing green for ramp. Out of ten games the most use it saw was it tapped a creature. Vexing Devil sounds good at first, but they're just going to take the four and he's not going to be activating battalion from the graveyard. And Hellrider , 3 of at least. He is amazing. Also Ash Zealot is an very good card. First strike and haste.
Shit, also, a powerhouse to be included in ANY aggro deck with humans, Champion of the Parish . The card is my heart and soul in The Kessig Township. It works extremely well. I would at least consider it...
Other than those few things, i think you have a pretty strong list.
Maybe you could get away with 23 land, too ;D
I dont think true boros is the way to go. I tweeked RDW to run 8 R/W duels and use blind obediance boros charm and nearhearth pilgrim and fronline medic. I also run 3 reckoner for which the duel arent nesessary. I also side faiths shield and firemane avenger. My Boros Wins I call it, not trying to brag but its been beating true boros decks with plains ,Gruul R.D.W and Naya humans. So id say its top of the aggro tier. Maybe you could print proxys and try it.