Implement some HTTPOS features in TBB
http://freehaven.net/anonbib/cache/LZCLCP_NDSS11.pdf lists several hacks that can be done at low cost to defend against website traffic fingerprinting. Not all of them are easy for TBB: some involve TCP/iptables hacks. However, others are relatively simple and include things like randomizing the accepted encoding, asking for ranges in parallel, issuing dummy pipeline requests, and so on.
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information