Hello
iam at watching tutorials level of learning Houdini
as animator i have doubt about comfort with using node based UI, i mean it could be a lot of clicking, diging and searching for specific parameter.

is it possible to collect all parameter ill be using for animation in one node?
fe. all morph targets, iris size, rotation of the bones etc.
make floatable window and put it on 2nd monitor ?
best if it would be drag and drop.

this could be usefull for lightning scene as well, so i could collect all lights intensity parameters in one node. making HDAs seems like too many clicking for me

somethink like it is solved in one of latest updates in Nuke:
https://vimeo.com/280355696 [vimeo.com]

In the HDA parameter editor you can drag and drop the parameters from the other nodes.

You can use the light linker for all light setup.

character rigs are typically built as Houdini Digital Assets - a single node that has all the parameters at the top level for just these reasons.