In answer to your questions:
1. Unfortunately no, ClassiPress does not offer spelling suggestions for locations entered into the new ad form for Google Maps. This is literally a text field as you can see from the
ClassiPress demo site. Unlike our
Vantage theme which does allow you to search a location, which I assume is maybe what you mean?
2. Currently the "refine results" (advanced search) widget is only available in the category view with the default theme. Changing this to the homepage would require some customization of the theme on your part as there is no setting to add this automatically via the admin dashboard. Yes, you can configure the advanced search yourself and select which relevant custom fields you would like to allow your site users to refine the results by. You can find instructions for this in our
theme documentation for a better idea of how they are set up.
3. Again this would require some customization of the theme as it is outside of what can be configured in the existing theme settings.
4. Yes featured listings are listed in the order by which the ad was posted.
We hope this information helps, thanks :)