Hi Mart, I can give you experience of 2 very different cars here in the garage.
If the MGB gets a clutch biting point ( with a hydraulic clutch ) close to the top of the clutch pedal travel then I know It's getting time for a clutch plate change. I've never had to bleed the MGB clutch.
O.K. I know I'm lecturing the professor, but for the listeners the clutch driven plate wearing down to the rivets means that the clutch cover plate is furthur in. Which means the release bearing is furthur back in the bell housing which means the clutch biting point is higher up. And the next sign of clutch wear is that you get clutch slip in 3rd / 4th.....
Time for a new clutch plate.
One slight difference is on the Lotus Elite where the clutch is cable operated and there is an adjustment to set the clutch cable free play. If this is ignored you get clutch slip if the biting point is too high. Time for adjustment or a new clutch driven plate.
Now on the Dolomites I've never got to the state where clutch wear has changed the biting point. It's always been a reason to change the clutch because of a replacement gearbox. On SWK ( an 1850 ) if the clutch biting point is quite low then a quick bleed of the system restores operation about 1/2 way down. I've never found out why.
HTH,
Tony.