I have never had what I describe below but this would be NICE.
A very long hot dog roll grilled on both sides with about 4/10 to 1/2 pound of warm lobster dipped in drawn butter and inserted into the roll...maybe a little Garlic Powder and Dill...........
Just Dreaming...and Salivating...

NB
EDIT: How about YOU describe to the waitperson ..
Your Own Lobster Roll ..(Build Your Own)... and a price is quoted ....?? How would that work..?