Currently it is possible to use math to determine a user's rewards for the current/pending week, but if there's an error with an API call, it can skew the results. Therefore it would be better if we could get this information directly from Rally with a JIT call instead; ideally one that basically just took a coinsymbol and wallet_id and returned all the data from the Rewards tab on the website. Also there is currently no way to get the Avg. Balance this week nor the Avg. Balance last 4 weeks. Really as it stands the existing Rewards APIs aren't as useful with v2 of rewards and could probably use a thorough rework.