Basically, you are not supposed to have input on the design, only the flavor and filling. That is supposed to make it easier for the Escape bride not having to plan so much. I have seen a variety of different designs that the chef's come up with...free of charge, but that is IF you let them come up with the idea. For the basic, included, it does seem like each bakery has a basic style they tend to go with. If you notice the ones at the Commander's terrace usually have three pink roses, the one dmslush had, is usually at SBP...etc...
That being said, I know ForKeeps (Tiffany) was at Commander's Terrace and had a totally different design that didn't go with her flowers either, so she doesn't know where it came from. And Purplegirl247 (Christine) ended up with purple dots like Mickey's all over hers because she requested some purple coloring.....
If you want something specific, it should be obtainable...for a price. Sunset Point does have some restrictions due to being in the heat of the sun for too long, certain fillings and fondant do not do well.
Ironically, I was rather particular regarding ours as I decorate cakes, and I didn't want to be disappointed. I remember my onsite WC being upset as she was telling me they had to smash part of a rose to get my topper on and it was behind the topper for photos, so no one could even tell. I didn't remember much about the day as it went so fast, but I am happy to look back on my photos and see that it was exactly as I asked for !