With the help of your feedback I have made some changes to Modeltrace. Most noticeable is the movement of the 'Collectables' sections. You will now find most collectables on the same pages as the relevant kits. This is because some retailers, whilst specialising mainly in collectables, also supply kits and accessories. So putting them on a separate page was putting them at a disadvantage. I have also added a form to make suggesting a site quicker and easier.
In the mean time, if you have any sites you think should be included, or have any suggestions for the site, please email me.