Hi, I have bought this fan around 10 years ago. I will say that it's performance is same as the day bought.
You'll notice that it's little noisy. It's common in speed fans. You will not like ur especially if you are in quiet environment.
I will list few Pro and cons apart from above and how it can improved.
Pro
.Brand value
.Service
.less maintenance
Cons
.Heavy
.consume little more power than recent fans
Area of improvement:
.Bring new technology of being power efficient
.Reduce noise
.Make it little light weight to avoid risks.