I need to check the quality of current OSCommerce prototype delivered by my current developers, and "it cannot be done" issues.
- Fast and easy checkout - no account, one button single page checkout
- main page should contain products and quantity edit fields
- infoboxes on main page should have settings to appear in left/right columns and contain not text only but pictures as well
- make html layout as clean as possible - remove messy/sts tables in tables template vs. clean css/div style
- SEO optimization - friendly URLs
- performance tuning
- security, attack and spam protection