If you know you're cutting corners, the ability to change in the future should be the priority. It usually means that you need to consider how the "perfect" solution would look like, so you know where the possible refinements will come to play.
There is a bigger story about the project for "YayHappyFunTimesCorp" which included that difficult conversation - how to, instead of carrying on with designing new features quickly, slow down and make sure that everything that we hacked together is scalable. It's definitely not an easy one.
I've seen designers simply copy and paste from an "inspirational" pinterest board, strategists copy and paste the first idea from an article or speech or book - hacking stuff together is for more than simply technical people.
If you know you're cutting corners, the ability to change in the future should be the priority. It usually means that you need to consider how the "perfect" solution would look like, so you know where the possible refinements will come to play.