After playing a few speed rounds this seems like it could be a beneficial change.
Having reached all 150 constructions allowed i'm stuck with 10 of each factory (only throwing out 100k of each resource).
However if I had a large number of roids (well, anything like 2k+) it'd be far more beneficial for me to have 30 more finance centres instead, which would increase my output the more roids I got.
Whether it's been discussing before I don't know, but it seems only common sense you can smash your own constructions, if it makes room for better ones?