My 2c, there are dozens of power monitoring smart plugs arriving on the market. There are only a couple that work with Sense because they were some of the first. Linking to these things the way Sense needs to, is a one-off each time (no standard API - each is different). If you want something that works, buy the supported Wemo or HS110/HS300 - you can still buy them. If you want something cheap, buy the TopGreeners or whatever, but don’t expect them to magically work with Sense some day.
But if you want support for TopGreener, you should like this wishlist item.