Keeping the balance is very similar to keeping balance when walking on a rope. If you try to run quickly you increase the chance to fall down and step on poop. :)
So if it’s me I will keep going forward just with small and persistent steps. One after another, until I cross the goal and get on the new rope.
Making these small changes(steps) will evolve the product into a better version and will keep the consistency. Each step needs to be informed by your user research and the tracking data from the product.
When the design is evolving into a newer version it needs to be done according to the user needs. Otherwise the friction will become to big and breaking the consistency will happen.
Hope this answers the question and it’s not too general :)
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