Intraday trading is much less risky than holding a position overnight. A lot of movement happens in the first and last 30 mins of trading, and over lunch. You can exit unproductive positions quickly, whereas if you couldn't day trade you'd only be able to sit and watch how the cards are falling.
Can't you just set autosell conditions to do the equivalent of the function with less time sensitivity? If you can't handle a $10 drop cut out at a $5 and lock in savings if it rises by $15.
