Hi,
Gleaned this thread on nanog mailer archive [1] mentioning fd.io 
Not a "thought leader", but I thought I respond with some fd.io data
points, hopefully relevant to the thread’s subject.
Note that most of them focus on data plane functionality, performance
and technology level comparison:
- IPv4 routing (large FIB) at Terabit speed, a video clip (low-budget)
showing what difference modern Xeon processors (Skylake) can make to
SW data plane if coupled with something super-fast, produced by LF
FD.io project for Xeon Skylake launch on 11th July 2017 (a year
ago). [2]
- SW data plane benchmarking, technical paper [3][4].
- Test and performance report for last fd.io release [5].
- Continuous trending of fd.io vpp master branch [6].
And although network control plane is not covered (e.g. BGP), many data
plane hooks required are there incl. large FIBs, VRFs, hierarchical FIB
for IP fast convergence, multicast, etc.
HTH
-Maciek
[1] https://mailman.nanog.org/pipermail/nanog/2018-June/095897.html
[2] "FD.io: A Universal Terabit Network Dataplane", https://www.youtube.com/watch?v=aLJ0XLeV3V4.
[3] https://fd.io/wp-content/uploads/sites/34/2018/01/performance_analysis_sw_data_planes_dec21_2017.pdf
[4] https://wiki.fd.io/images/3/31/Benchmarking-sw-data-planes-Dec5_2017.pdf
[5] FD.io CSIT-CPL rls1804, https://docs.fd.io/csit/rls1804/report/.
[6] FD.io CSIT-CPL continuous VPP performance trending:
IPv4, https://docs.fd.io/csit/master/trending/new/trending/ip4.html
as of next week above link will be migrated to: https://docs.fd.io/csit/master/trending/trending/ip4.html
IPv6, https://docs.fd.io/csit/master/trending/new/trending/ip6.html
as of next week above link will be migrated to: https://docs.fd.io/csit/master/trending/trending/ip6.html