This is a very good question Athenaues...
Theirs a great deal of thought that goes into menu development, with balance and seasonality at the forefront.
If you are preparing a wonderful meal for your self and friends, it's always a fun idea to theme out the menu. It is a way to show case a certian ingredient or ingredients...
When I design menu's I always take balance of cost, texture, taste, aroma, and plate presantations into account.
I'm not sure that we are adverse to seeing the same ingredients in the flow of a meal,for me it's more about suprizing the sences everytime you bit into something....
It's like following the basic rule of menu flow, to start salty/savoury and finish sweet..its' what the palete naturaly understands.
Also..the rishness of a meal must be considered, is there to much pastry? are there two butter enriched sauces back to back and then finishing with a dessert with an anglaise base/or custard. you will over work your taste buds to try and find acids to cut through all the butter/cream and or pastries.
Certainly you can run a theme that gives you, let's say "crispness" in each course..like a simple fresh tomato salad,but served in a potato nest with a lovely and light vinaigette, followed by a lamb napolian staked with parmesan laces instead of puff pastry with a light fig/balsamic drizzle.
and finish with a trio of sorbets in an almond tuile with fresh seasonal berries thrown about.
You have light, clean flavors..but you also have a nice seem of crispness running through the menu.
I also think that IMO, that the American eater seems to think that if they see or eat the same things throughout the meal (and it is not a theme) that the chef is not creative.
I think another fun way to entertian your guest or custamers is to offer the main center of the plate item in numerous ways..what I mean is offer sushi grade tuna, but prepare it in thre distictly different fashions,sashimi,tartare,seared with a latin nuance for a first course, then maybe veal done three ways,a baby chop with morels, a gratin, and a roularde, then maybe finish with an apple sorbet,a mini apple souffle and carmilized apples..I don't know..these are just quick ideas of the top of my head, but when well thought out you can really have a blast and be extremly creative.