Hello! My colleague already replied to you by email, but let me preply as well, for everyone's benefit. :)
Our developers are aware of load-time issues, and are working on improving them for a future Jetpack release.
Meanwhile, if you have any concrete suggestions for us, have a look at our page on Contributing to Jetpack :
There, we explain how to file Trac tickets for us, for example.
Thanks for your input!