Hi,
I do agree with the rest of the WHMCS users here that the way this has been implemented is bad, to say the least, and in some cases, it is harmful to WHMCS customers who offer web development services. At a minimum, there should have been an option for us to select in WHMCS if we wish to expose this service in WHMCS or not.
In our case, we develop the website for customers using WP and I would say about 99% of our customers don't know the difference between WP and Sitejet so they would assume they can edit their WP site using Sitejet and break stuff. Who do you think they will blame once their site is broken? Of course, they will blame us!
WHMCS please don't try to hurt your customers as it simply will force us to find other solutions. Even if a solution is not currently available, if you piss off enough of your clients, I'm sure a competitor will easily love to capitalize on your failures.