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God bless TA specialties.
A modern(ish) carbon campag record 53/39 strangely didn't have enough clearance on my MGOOF corsa extra build under the front mech. TA specialties do a replacement 50t ring which not only fitted but has been a godsend from a riding perspective.
EcuriePeril-
Amen, I rarely need to use a 52T, especially on touring/exploring type rides, so I run a 48/34 on a 5-bolt 110mm square taper crank. That also allows me to get the narrowest chainline possible; because I very rarely use the 2 smallest sprockets (even with a 48T chainring) I don't care about having perfect-on-paper chainline, it works better 95% of the time to have a straighter chainline to the bigger sprockets. Obviously none of that is possibly with external BBs.
ffm
I would kind of argue that this is for the better in that we're not stuck with 53/39 and some manufacturers are finally understanding that us normals aren't riding up mountains at 30kph and some of us ride in slop up hills and need lower gears.
I don't really know what changes have been made since I've been using powermeter cranks but haven't Shimano been on 130 and 110 bcd for ages, then went to the lighter/stronger offset shared 110bcd for Di2 because normal chainrings weren't stiff enough and they could share the bcd between "small" and "large" rings? Hard for me to say if this is better or worse given most of my cranks aren't actually Shimano.