While I understand and agree that a particluar Senator chosen by his state legislators would very likely be less accessible to citizens in his state - save those of his own district - I think the senator would be very responsive to the needs of fellow state legislators. Those other state legislators are very accessible and accountable to their constits.
So while a senator appointed the original way is less accountable to ME, he is WAY accountable to my state rep - who is WAY accessible and accountable to me.
Of course I omit the arguments pertaining to strengthening state's rights.
-PJ