Avoid Steep Gradients?

Hi!

I recently managed to reduce the average gradient of a route by taking different path to the route. I was wondering if this might be a worthwhile addition to the website?

Some examples, it's hard to notice it but:

https://cycle.travel/map/journey/578506 (steeper)

https://cycle.travel/map/journey/578507

I did also read through some old forum posts about elevation data and how a lot of approximations are made to calculate it, and i was wondering if my neat little way to avoid steep streets is actually worthwhile or if this is just errors from the approximations adding up?

cheers,

ds