These cards are expensive mostly because they are extremely collectible and have low supply, not because they are playable, and foil reprintings wouldn't change this at all
Like most Magic: The Gathering cards, the value of Pegasus Courser depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Dominaria)
Any future bans are likely to come from this list, save for maybe something that shows up in a new set and immediately causes problems, like Nadu
If Synthesizer Labship's second ability causes a Vehicle to become an artifact creature, its base power and toughness will be set to 2/2
The only issue is the popularity has it hard to find.
We already knew that Ravnica Remastered would be the first Magic set released in 2024, and we even got to see three retro frame cards last month