It is really much more like WeChat payments or Alipay or whatever than anything else. The cryptocurrency part is largely a smokescreen and marketing.
The goal is for Visa, PayPal, and Mastercard (who are sponsoring it) to keep being able to profit from digital payments, and to fight against things like Bitcoin and Ethereum which are making major pushes to scale. They want to get in ahead of real cryptocurrency.
Anyone in banking or government who is concerned about cryptocurrency impacting their control will eventually figure out that Libra is the best thing they could hope for.
I am worried that they will eventually figure that out, and then get quite excited for Libra, then Libra will launch and really restrict uptake of Bitcoin and Ethereum. Once governments get familiar with their convenient Facebook Libra Financial Spy Portal they might even try to outlaw real cryptocurrencies.