Figured I would bring this up, I found this recent update to the old RocketLauncher app, still being developed and all that: https://github.com/Hypnotoad90/RocketLauncher2

What does it do? Well, if you have a huge amount of WADs, PK3s, DEHs and you want to launch a whole bunch at once, this helps you organize things a lot. I've generally liked the layout out of this one over the other launchers I've tried, but I haven't attempted the config saving yet. Using this I pretty much need to either run RocketLauncher 2 or Doomseeker for all my Doom needs (unless it's a rare time when DoomRPG comes into account, then I need to run that slightly more awkward but functional included launcher.)