https://www.mtggoldfish.com/articles/budget-magic-27-2-tix-two-tix-red-standard

"...The biggest problem card for our deck is Heart of Kiran, which is annoyingly good because it's not a creature, which means we can't target it with our "target creature can't block" effects, so our opponent can simply let us attack and—even if we make it so their other creatures can't block—crew up the Heart of Kiran and eat one of our creatures. The good news is that Heart of Kiran is on the downswing, only showing up in about 13% of decks. Of course, pretty much any five-mana (or more) play is going to be really bad for our deck, but that makes sense because the entire idea of our deck is to kill our opponent before they get a chance to start making these types of plays.

All in all, I'm really happy with the main deck. For a mono-red deck to succeed in Standard, it needs to be as fast as possible, and I think that Two-Tix Red does a good job of meeting this criterion. On the other hand, the sideboard is rough and can definitely be improved. While I like some of the cards in the sideboard, it's really hard to bring in many copies Destructive Tampering and Savage Alliance without slowing down our deck, so this is probably the biggest area for potential improvement moving forward, although I'm not really sure what to add except for a fourth Lightning Axe, which is probably our best way of answering Heart of Kiran."