In an intercept from above would you not set say a stabilisation altitude…say 1000 feet and then if you get ALT capture whilst trying to capture the GS your not stable and you go around? If you set a higher altitude (say the go around alt) you are possibly too busy trying to capture the GS with a high ROD near to the ground you don't notice the altitude for a moment and hey presto WHOOP WHOOP PULL UP, SINK RATE SINK RATE or worse
Without having something sensible set when do you call it a day and throw away the approach? 1000, 500, where?? I personally like to use the automatics as a safety net for my own incompetence
I personally would only set a higher altitude when I am established on the GS and the situation is 100% under my control…..