I never fill a template with too many FX plug-ins. A current favorite template has some group tracks, one FX track, a Mix Bus and a Master Output. No plug-ins are assigned to any tracks. I use Track Presets or individual plug-ins on tracks or sets of Q-Linked tracks as I build the project. (Screen shot below)
You can bypass FX tracks with one click/button push, or mute, solo, listen (if using Control Room) them. You can bypass individual plug-ins on an FX track.
If you want Vocal Chains, then create one, save it as a Track Preset. Then, when you can create five audio tracks and apply that preset to them in one shot. You can also select a number of tracks, Quick Link them and then apply a track Preset to the selected tracks.
For HSSE, and I assume similar Halion family instruments, (advanced versions may have changed this), but, for HSSE 3, you can create a Preset with multiple instruments assigned to individual outputs. However, when that preset is loaded, Cubase does not switch on the ouputs, that has to be done on the track or rack instance of the instrument. Also, confusing, is that (on my version Pro 9.0.40) those outputs do not appear in the Project window and they can not be moved around on the Mixing Console. I think the latest version has improved on this?
Anyway, here’s an example of the template I mentioned, “basic band.”