I do first a game that please me.
In reviews, i pick an idea or two that i liked. An addition of reviews can be good , for example in my game one player didn't know how to start the game it was to confusing, with the other player reviews i understood what to change (discord can be good for that : with just a picture of my menu i had a lot of good advice, or a list of things they misunderstood ).
I finally choose to keep the idea of the shield to simulate the invincibility frame (it was to arcade for my tastes an invincibility shield and i thought that the invincibility frame was too short to really need an illustration) .But the players thought that the flying car had a bug that permitted it to go through several buildings without additional damages. Finally, i used the 2 lines of codes that i kept to add the shield, to make the invincibility frame visible.
If a concept is too big i can do different mode for the game or an all new game. Are you asking if i could change something that could break the game to please the player ? However i don't use all the code i write to do a game, i can have tried some concepts that are not in the game, especially for a Jam. Some concepts can be almost implemented.
The more important is that it can exist a difference between what i attempted to created and the player feeling. But only one review is sometime not enough.