We just purchased our new 25' TT in November and will not take delivery until early May but I am thrilled to have an outdoor kitchen. We can keep condiments out there, wash out dirty pots and not bring them inside, get beverages without constantly going into the camper etc. Also nice to have the extra burners as sometimes I really need an extra burner for a big pot without crowding the other burners.
We had a pop-up previously and had an outdoor stovetop (2 burners) and it was very helpful as they were higher output and boiled water for pasta etc. much faster than inside.
Hope this helps.