You can have multiple lists in Google Maps and the Maps can show those lists together on the UI. I have "Favorites", "Want to Go" among other lists with different pins (including colors).
Disc: Googler but nowhere close to the Maps team.
Disc: Googler but nowhere close to the Maps team.
I will also readily admit that I may be a marginal case here, but Apple's more subtle treatment serves obsessive pinners like me without cluttering the map.