I was playing a career and had a contract to recover some debris from orbit. I saved my recovery vessel and named it "Kessler's Revenge" which afterwards got me wondering just how bad can it be or get if you don't recover destroy or minimize your 'spare' parts. Normally I just delete any parts from the tracking station and don't think about it. I always found that the debris gets rather annoying when trying to find something or click on the right track etc. So I started a new game and haven't been doing anything to get rid of it just to see how bad it can get. OK I may have wanted to use a mod but Kessler sounds better lol.
So far all I have noticed is more activity in KEO in the odd object in sight or passing by. What I am curious about is just how bad could it get by the time you exhaust that career play through. Has anyone left all the junk flying long enough for it to develop into a actual problem? Not trying to prove or disprove the theory just curious as to effects in game mild or wild.