Is a slide out roller topper needed?

THANKS for all the suggestions. Looks like the first ones to respond were all pro slide toppers, then tonight, several negatives or Rv'ers who have them but don't see advantage. As one responder pointed out, cost could be about $1000.. I too only take about 5-10 minutes to get my little stepladder out and my 8 ft telescoping wash brush and sweep and clean off the slide roof before retracting. For + or- $1000, I will keep doing that. As one said, the leaves are an annoyance but easily cleaned off... not worth the $ to me to add that little timesaver. I really appreciate all the input! It is through the generous time given by fellow RV'ers, that better, informed decisions are made! THANKS everyone!