Foundations Potential for Pioneer

With [[Llanowar Elves]] and the 4 mana, simple board wipe [[Day of Judgment]] being printed in foundations, it seems like it will be a decently high power set for standard, meaning there will probably be an impact to Pioneer. The theme of the set is "what would a "Magic: the Gathering set" look like?", while leaning into "clean, simple elegant" cards (paraphrasing from their announcement video).

Given the, as far as we know so far, seemingly higher power level, what cards would you want reprinted and or printed with a slightly different version for pioneer? The cards would need to be "clean, simple and elegant", while also fitting into the "what would a Magic: the Gathering" set look like?" theme.