While a full sized pickup might be preferable, I would never claim it is “definitely” needed. Also, be aware that the current 5.0TA is a bit heavier than the original 5.0TAs manufactured before ETI changed the molds and provided for a wider door.
Honestly, don’t be honest if you like your Scamp. If it looks like new, it is doubtful any camping business or resort offering seasonal rates can tell if it is one year old or 20 years old. Age and year of manufacture isn’t obvious like it would be comparing a ‘57 Chevy to a ‘58 Chevy. Their only reason for a 10 year rule is to prevent complaints from the resident “homeowner association” types who want to tell others their lawns need to be mowed because the grass is an eighth of an inch too tall in a sticks and bricks neighborhood, or more applicable to RVing, you need to paint your hitch because the color has faded or the paint is chipped. Your Scamp isn’t falling apart like stick built trailers do. I would not upgrade if you are happy with what you have; I would only do so if you are unhappy with it or want the features that an Escape offers that are not in your Scamp.
What a long strange trip itís been!