Hi Luke,
I put your post on my todo-list :) !
Could I also add a request, related to why your post ended up my todo-list?
Actually I just posted about an excel overview of which coins are traded on which exchanges:
https://steemit.com/cryptocurrency/@hasse72/drafting-a-missing-crypto-overview-which-coins-on-which-exchanges
It might be fun to power this file up with data feeds using API's just like you and others did too...if the API's limitations allow it... I'm afraid it won't be so easy as it requires more than the most common coin info requests,...
If you have any suggestions to add... It would be really appreciated :-) !
Further, I just did a feature proposal at Delta (which is about to support exchange API's too)...to let users choose their reference currency (from a list including besides BTC also BitShares, NEO, XLM,...)... hoping this will make the app even more useful for you and others too (!?)... They are usually very responsive to questions and requests...so...curious about what they'll say :-).