Wowgo's Pioneer 4 is commonly used as a daily commuter board, so deck integrity matters as much as electronics. If the deck is delaminating or cracking, treat it as a structural safety issue-continued riding can lead to sudden failure under load.
A deck swap can be viable if replacement decks are available and the electronics, trucks, and battery enclosure can be transferred cleanly. Compare the full parts list (deck, grip, hardware, potential wiring extensions) to the repair threshold; deck work can creep upward if multiple components need replacement.
Replacement is often the better choice when the delamination is paired with water exposure, battery enclosure damage, or intermittent ESC behavior, since you may be chasing hidden corrosion or wiring fatigue. If the board is older and you've already replaced the battery once, upgrading to a newer platform may deliver better safety, range consistency, and parts availability.