Good question and thanks for reaching out to me! Because of eBay's recent change to their link policy, external links are no longer allowed in item descriptions. This made the old Auctiva Supersized Image page obsolete––so in order to continue providing this feature we enhanced our Listing Templates to support Supersized Images without using links.
For you and others who do not want to use any Listing Template designs but still want Supersized Images I recommend using the "Plain White" Listing Template. This is a simple white template that looks like you're not using one at all but still allows you to use Super Sized Images and arrange them in the format you like best.
I'm sorry if this has caused any inconveniences but I hope this solution works for you.
Let me know if you have any other questions!