It closely follows ubl JS till Hubli, atleast after Hubli it can be speeded up. But now it runs in 3 zones so chances of speeding would be pretty difficult. As u said LTT exp should depart around 7-8 , now it's more like a convenient trian for southern Maharashtra than SWR. Speeding up of this train is again left upon ability of CR to accomodate it in LTT.