Maybe there's another Blazing Shoalbased deck or combo that could be scary, although it seems like it would have the same problem as Shoal Infect (needing to play a bunch of expensive, uncastable cards to make Blazing Shoal work)
Drover of the Mighty isnt the craziest payoff or anything, but it is nice to have more sources of red without needing more red lands
You also get the splash damage of introducing the day/night cycle into your game, because players love tracking extra stuff
Wargamer approached Wizards of the Coast for comment on these printing issues, but so far we've received no statement
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Glorious Anthem or Always Watching can further buff your creatures, and you want to win as fast as possible