I don't see how anyone can answer this without knowing how your customers and audience use the site. I could critique the fonts and such, but sometimes sites with downright ugly design are very useful to their user base, like Craigslist.
If you are asking such a general question I suspect you might not be doing enough measurement.
If you are asking such a general question I suspect you might not be doing enough measurement.
You can try Google Page Speed for some optimization suggestions but you're not doing badly, except for serving unscaled images (ouch). I'd fix that at least. https://developers.google.com/pagespeed/#url=www.pe.com&...