I generated/imported a vanity address and for some reason not only it triggered a blockchain rescan, but FULL rescan, starting with 2009. Can we have a feature to:

1. Optionally tell client to not rescan blockchain when importing address? This is useful when we have a known fresh address where we don't expect to see balance
2. If it rescans, then at least scan from the client default checkpoint block, not download the whole whatever petabytes is in the blockchain now. That's the whole reason I'm using multibit instead of reference client - to avoid having to manage the full blockchain