Since cryptocurrency is an investment for a lot of people, there should be rate of return for the various currencies. I would include both a 1 year rate and a 6 month rate (to see how the newer coins are faring).
This is a very solid idea.
How many coins do you honestly think would be in profit from IPO levels? There is probably only a few coins that have a profitable 6 month and / or 1 year chart. I would guess that quite a few (??) of the older coins may still be in a profit position from their date of launch, despite having a very depressing year. Profits from older coins only count if you were lucky enough to be there when they launched! For people that bought this year and new people coming to invest, they will be looking at what kind of profit they can make now, so the pre-2014 chart may be irrelevant to them.
Since 80% of coins disappear in the first 30 days, 6 months of performance should be the minimum when calculating return. Any currency that has had a huge price spike and subsequent fall will have a tough time getting back on track. I'm not saying it won't happen, but it will take a long time and a lot of hard work to build stability and trust.
Here's hoping 2015 brings life and integrity back to crypto!