I don't know why the pedal height would change unless there's a problem with the pedal mount or the actuating mechanism, but your symptoms sound exactly like what happened in my 520i when the slave cylinder failed. Check your clutch fluid level. If it's low or gone, you've got a bad master or slave cylinder. Look for leaks from the slave and the master
I think this giuy has the answer
As for the front suspension the first fix to try iis the thrust arms complete with M5 or 750 bushings.I dont know why our cars are so sensitive to ANY front wheel anomolies