Not to heap more unnecessary praise on the land utility idea, but I found that with nearly mono red decks like the one above, I was always tempted to shave my land count to 16 and sometimes even 15, because flooding with a bunch of 1/1 dorks on the table is just so bad. But when I can pick up useful lands like Tectonic Edge and Teetering Peeks between packs, I'm much more amenable to running the full 17. This has the wonderful side effects of smoothing out my mana, and increasing the value of landfall cards, particularly Geopede and the aforementioned Adventuring Gear. It harkens back to Zendikar-era standard, when people would debate whether it was correct to run 25 or 26 (!!) lands in their Boros landfall aggro decks.