Waterlogged Teachings and Stump Stomp will be useful in every deck theyre eligible for, and while Strength of the Harvest appears to only be relevant for specific archetypes, be honest: when was the last time you saw a Selesnya deck that wasnt about spamming the board with either creatures or enchantments
Since winning the game is the goal of any MTG player, WotC wouldnt go easy on us, and these cards risk unbalancing the game
Cheap instants and sorceries are staples in many formats, especially the interactive pieces
Special attention needs to be paid on the choice of paper (for weight and stiffness) and the accuracy of the cut
If we were ever going to see Reserved List card get reprinted, it would likely be in incredibly small numbers
Its not a cheap activation cost, for sure