I'll like roundabouts as soon as someone comes up with a good way to fix the resource starvation problem (i.e., if there's a constant stream of traffic from your left, you'll never get a turn to go).
Add traffic signals:
* https://en.wikipedia.org/wiki/Roundabout#Signalised_roundabo...
* http://www.jctconsultancy.co.uk/Consultancy/roundabouts.php
* https://assets.publishing.service.gov.uk/media/5e81b669e90e0...
If one direction dominates, you can stop it and then let the others have a turn.
If congestion occurs only at "peak" time(s) (e.g., rush hour(s)) then that's when you are stop/go with signals, whereas the rest of the time the signals are set to the 'traditional' roundabout way (perhaps flashing yellow?), then it could still mean that for (say) 20 hours of the day you still have the benefits (plus also during weekends).
And even during peak time(s) you probably get reduced collision rates and collision intensities.