Should horizontal graphs created with `visualize` be the default?

[nvaytet]

We seem to use graph_attr={'rankdir': 'LR'} in all our workflows. Should this just be the default behaviour of visualize?

In the sciline docs, we seem to mostly use vertical graphs, which makes sense with the page layout (and the graphs tend to be relatively short).
Would be a little annoying (confusing?) to have to use graph_attr={'rankdir': 'TB'} in the docs, but I feel the UX gain for reduction workflows would be worth it?

[SimonHeybrock]

Another option is to do this in the ESS InstrumentWorkflow wrappers of sciline.Pipeline, since this may just be the case for our applications(alongside other convenience, such as default target keys, ...).