Enhance API for accounts

Hi,
Seafile has wonderfull roles functional. It’s possible to apply specified role to an account.
But I can’t (or it’s not documented yet) do it via API. Also I can’t get accounts role via API.
Now by /api2/accounts/aa@bb.com/ I get
{
“create_time”: 1409563569822754,
“department”: “”,
“email”: "aa@bb.com",
“id”: 4,
“is_active”: true,
“is_staff”: false,
“login_id”: null,
“name”: “Abby Aaron”,
“total”: 107374182400,
“usage”: 5728998676
}

Could you enhance your API by adding “role”:
{
“create_time”: 1409563569822754,
“department”: “”,
“email”: "aa@bb.com",
“id”: 4,
“is_active”: true,
“is_staff”: false,
“login_id”: null,
“name”: “Abby Aaron”,
“total”: 107374182400,
“usage”: 5728998676,
“role”: “guest”
}
It’s needed to create some reports via API, not from DB data which may be changed with release.

Other feature it’s accounts traffic it’s nice to have an possibility to get accounts traffic.