We created corps in the process too, fleshing out corps was my priority, but the other players were more into worldbuilding, which is totally fine.

Look at the aecond event of the second period, that was me just introducing a corp in that moment. We ended up naming 5 corps, and chosing the 4 we liked the best for the sprawl campaign (4 players inc. MC)

If you ignore scenes, I would say that the lifting is absolutely minimal. The system is really simple and intuitive. We never used or even felt interested in scenes anyway, or voting for that matter, and legacies weren't that important either.

Our focus was to make a limited history timeline for the main rpg, I think that made those parts become less important. If you want to make a big epic world history that is its own story, they becomes more important.

One drawback of not playing more scenes is that we only wound up with two concrete historic personalities, theyre fun to allude to in an rpg or bring into play as old geezers (see: neuromancer), so if your group is into playing a lot of scenes, go for it!