To my local 0.15.0, I added a command line option to specify the max upload timeframe to try and more evenly spread out the data spent serving old blocks. The 24 hour default results in overly spikey network traffic.
sipa: re #11167, is it a problem that you can send to BIP173 addresses when IsWitness is diabled? "addwitnessaddress" rejects while sendtoaddress doesn't... I guess since it's active on mainnet this doesn't matter anymore?