I am not against being able to rename the individual instances, but I am much more interested in the ability to have a default alias. I would definitely take the time to rename all my plugins in the Plugin Manager but I doubt I would take the time to rename specific instances all that often.
Don’t get me wrong, if it is something that Steinberg could code fairly easily, it would be a nice option to have. However, if this added functionality would hold up the development on a new default alias feature, I would have to say that renaming specific instances isn’t a top priority for me personally.