In general I would say Loopt is doing just about the best they possibly can given whats currently available. Last I heard Loopt's software was written in Java ME, which means they are using a GPS optional library (probably the Location API, or maybe OpenLAPI). Devices that support this are still few and far between. But they are on the rise. As long as a new device supports the required optional libraries, supporting it is not difficult (there are still usually quirks that need to be sorted out however, often requiring separate builds for each device even though its JavaME).

It may take a stomach to do this kind of stuff, but that is the cost of being on the bleeding edge.