Only ever ridden a couple of steel frame extensively and they were offroad.One was a Kona Explosif that I still have and that Kona means that I can confer with the fact that Steel gives a compliant frame. Never needed Suspension on that bike as fast across rough ground and you could see the wheelbase extending as the frame flexed with the bumps. Never gave a problem on the bottom bracket though. However the next one was a custom build in Lightweight steel and that one did cost me a few spokes and rear deraillers when BB flex caused the rear deraiiler to hit the spokes.

However this was really aggressive offroad riding but you take your choice on frame weight and then pay the consequences. Don't know if a "GOOD" steel frame nowadays would have the BB flex problem bit I dare say that you could chance your arm and ask in the "Road Forum". Once you get through the insults for daring to ask such a stupid question about such inferior materials for a modern bike-- You may get a few frames recommended that don't flex and ride well.