PIE root cat organization

Would it makes sense to have descendant languages be nested? The drop down can get very cluttered and it might make sense to have all the Romance languages be under Latin, which would, in turn, be under PI. Of course, it would have to determine whether there were any ancestor languages before nesting (i.e. if English were the only Germanic language to have a category it would be top level until an ancestor is added). I'm not sure whether this idea makes any sense--I just thought I'd suggest it in case it hadn't occurred to you.

Not all Romance languages having a term derived from a particular root inherited that term from Latin, though. Old French has many Germanic terms for example.

I was aware of that, and you are correct that it might be misleading. I just wish there were to prevent ugly lists like in *ters-.