I think the big question is do you also intend to print straight from the negative to paper at some point? Developing for scanner may make this difficult in the future.
The wisdom about developing a negative for scanning used to say "develop thin" , say to a grade 4 or grade 5, so you don't exceed the scanner's ability to capture the highlights. But these days, depending on the scanner, that might be a moot point. If you "developed thick" many scanners can easily capture very thick densities. Do you get "more tonality" by developing thick? I don't know? Where the fall out in quality would hit with any particular film is another good question. Eventually the highlights may start to block up and get grainy.
~m