I have no problem with starting out with the city size larger than size 1, but I still think that a special starter building like a Colonial Outpost or Pioneer's Fort would be better than other pre-made buildings.
Especially with the Guild/Union National Wonders I plan to make which would give free buildings to every city if you meet the proper requirements. This should help a lot in that once you got the basic infrastructure set up in your main cities then they are automatically done for your new ones.
EDIT: So what's the hardest part of starting a new city? I would think growth, production and possibly health. So maybe something like this ...
Colonial Outpost
Cost: Cannot be Built (Given by Colonist upon founding City)
Tech: Navigation
Upgrades To: Pioneer Outpost
Health: +1
Culture: +1
- +5% Building Production
- Stores 5% of Food After Growth
- +5% Maintenance
Pioneer Outpost
Cost: Cannot be Built (Given by Pioneer upon founding City)
Tech: Steam Power
Health: +2
Culture: +2
- +10% Building Production
- Stores 10% of Food After Growth
- +10% Maintenance
What you think? Not too powerful but would give a nice starting boost. Could even say add a Settler one and move all the stats up a bit leaving the pioneer at +3 and 15% stats.