What are the issues you had with Security Assist?
I'm not sure where that impression comes from, on a daily basis I am here in the forums trying to help people figure out the issues they are posting. If you post about about the issues you are facing, I'll be more than happy to help you too.
There are a number of reasons for the extension consolidations. For starters to more tightly integrate the extensions together, as well address issues people where having with conflicts between the stand alone extensions, and to help alleviate the need for multiple serial numbers.
The consolidations also include many new improvements, some highlights being:
Pro Maps now uses the V3 map API
DataAssist now includes application presets and can create database tables for you.
You can use form builder presets in the Data assist pages
these are just a couple of examples.