Well, yes it currently adds or i should say AI "selects" suffixes but if you think about it, it's not an easy problem to solve. For example, if you want to add just 3 letters the possibilities are 26^3 or 17K, with 4 its > 450K. How do you select just a few hundred pronounceable relevant words? That's where AI comes in. I plan to display non-suffixed results as well in future. Thanks for the feedback!
I and a friend are validating an idea: A product to track your (and competitor) Shopify app ranking and reviews. If you'd like to help, please fill this survey. It will only take 2 minutes. Thanks in advance!
the site uses many algorithms some of which are AI-based. AI does not always kick in or in other words its results are not always ranked higher. Try this search - https://aidomainsearch.com/?search=z . as you can see brand and composite have ai capabilities. We want to use ai more extensively in future.
In case you missed steve souders wrote about domain sharding recently - http://www.stevesouders.com/blog/2013/09/05/domain-sharding-....
Domain sharding combined along with dns prefetching is also one of the techniques you might want to look into if you have high number of requests.
Check out amazon and etsy to see how they are using it :)
Kudos for mentioning inject after load for third party assets. We are a third party monitoring service yourselves (http://fueldeck.com) and we defer loading our script till page load to make sure user experience is not affected. Our customers don't have to worry about that.