I haven't done a lot on the CSR1Kv apart from basic routing and OTV. Maybe you've seen this document already, but if not, some useful info here on what it can support:
It does include VXLAN, QoS which may need package licenses to enable features.
http://www.cisco.com/c/en/us/td/docs/routers/csr1000/software/configuration/csr1000Vswcfg/csroverview.html
http://www.cisco.com/c/en/us/td/docs/routers/csr1000/software/vxlan/vxlan.html
Hope this helps
Bilal
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