Even if we look at the top 10, 4/10 most frequent commanders come from non-standard sets (either Modern Horizons, C18, or the 2019 Brawl decks)
Worse yet, you can splurge your money on an expensive one and still make the wrong choice
Mono-Green, like the other Mono Colored decks, has access to staple cards that normally wouldn't be played in a multi-Colored deck, and would go under the radar otherwise
Summary Combo decks always fire cantrips on Turn 1
But the increased availability of cards also meant that fewer cards were rare
Luckily, Commander 2017 offers us a way to discourage such trades with Scalelord Reckoner, which acts as a rattlesnake to ward off any potential targeted removal against your dragons