Your calls have been heard, and with this thread comes the great news of the release of the official English Mi PC Suite (MiPhone Manager). It's been long since the first request came up, and on this special day your wish finally came true!
Under My Devices, there'll be several tabs on the right that allows you to change/access files from your phone.
Oh, how 'bout some SMS texting right from your PC? Yes, you heard it right. Same function present on the Mi Cloud.