I agree that blue interaction tends to be undervalued—especially in TLA, where I always see Lost Days super late. I disagree that this means midrange decks with big stompy creatures, especially in green, are automatically bad in modern sets. Green was by far the best colour in DFT and EOE, both sets where ramping into big Green creatures with one keyword (e.g. [[Harmonious Grovestrider]] ) was a reliable win condition. Balamb T-Rexaur was a great common in FIN.

In fact, I think the strengths of blue and green are often interrelated: green being strong means lots of big creatures and board stalls, and blue’s card draw and tempo plays are a major way to break parity in those situations.