I am testing out a blockchain parser I wrote for the google cloud datastore.
It should query very fast once I optimize the query functions. 
All pubkey hashes are indexed so it could be used to serve light wallets or it also could be used for commercial bitcoin or other blockchain uses.

Google datastore is expensive to do all the indexing and write ops($100 month  + $1500 to load up chain). I could write an API library and for a small fee,anyone could access it. 

Is there any interest in something like this?