New Network Layout #1 - Layout of my experimental network vlan

I have been very fortunate to be able to put together pretty much any network layout that I want.  I have made some changes over the years culminating in what I have currently.  Through many trials, I have been able to get to the point that I am comfortable with the layout and how it works.  The experimental network is below:

As you can see in this diagram, I have a Gateway vlan which I connect most of my toys to.  The Gateway vlan in turn is connected, through various routers to the Internet hosted by my ISP.  For purposes of this discussion, how I connect is immaterial.  I have a pfSense router which isolates the Experimental vlan (Exp) from the Gateway vlan.  I also have a Personal vlan (Pers) which is used to monitor the Exp and is isolated from the Exp by another pfSense router.  I can update/command experiments in the Exp from anywhere in the house that is connected to the Pers.  The Exp is also connected to the outside world during Christmas (and other specific times) through a Ubiquiti WAP.  When Christmas rolls around the wifi connection is turned on to command some wifi-enabled switches and some wifi-enabled LED displays via experiments in the Exp vlan.  Since I am using a lot of managed switches, I am able to connect an Ubuntu server to the Exp, along with an RPi Cluster, and additional RPi experiments.  I also have a permanent RPi development terminal that I can use to ssh into various experiments as necessary.  The Ubuntu server supplies a number of VMs that are useful for development work including a subversion repository and some bug/issue tracking software like RedMine.