Maybe I’m just becoming an old get off my lawn ex-operations curmudgeon in my “old” age, but I find the vSphere Client hard to part with (this message brought to you by Me, and only Me, and no one but Me). I found it very annoying that if you upgraded any VM hardware versions to 10, you could no longer edit settings in the old client – even something common like mounting an ISO.
vSphere 5.5 U2 has brought us this, yay! This allows editing of any features present in the old client which is good enough for basic stuff.
EDIT: Whoops.. fixed the screenshot