To offer one or more themes/templates is a tricky issue. If there will be more themes in the installation package then those should be totally different so the admin/shop owner can select the one fitting best for his/her needs. But at the moment the basic theme works as a charm in most of the small shop cases - bigger ones require custom themes (which are also fantastic).
Maybe the best solution would be offering one default theme and 1-5 free themes through the contributions?
One considerable thing could be integrating theme contributions in some way to admin backend so the admin/shop owner could select and install themes without the knowledge of css/php. But this is again just an idea out of nowhere
