Enabling synaptics and elantech touchpads by default

Hi!
I've created a reveiew, https://reviews.freebsd.org/D20507, to enable 
synaptics and elantech touchpads by default.

Today, these tunables needs to be set on boot for users to get full use 
of their touchpads, even when using X.  By enabling this, things like 
two finger scroll will work in X by default, meaning we get a more user 
friendly appearance.

Is there any reason not to do this?
Regards
-- 
Niclas Zeising