For relaxing n family game, switch is a good choice. Dont need to worry about switch going off soon, i expect at least for another 5yrs for new model/generation to come out. By then, the game library should have increase by miles. Definitely more than ps5

Jz my 2cents.

If switch region, any balance remaining will be wipe out right?

Jz take it. Get family package from shopee. The normal 1 without expansion. Seller will add you into the family group.