If you set up a track to work as a send (good instructions in the first post here, and if you go a few posts down the thread there’s a link to an older thread with a lot of discussion about it, too), try putting Spatializer in slot 1 and Dark Reverb in slot 2. That’s pretty much my default aux send. Put Spatializer in M/S mode, turn the side up a bit and the mid down a bit (just 2 or 3 in each direction works for me) and set up the stuff on the main page to taste. I also find turning up the predelay in Dark Reverb just a tiny bit, 1-3, works really well in this context; the microtiming for the trig on the send track (it will make sense when you read the post I linked) adds a bit of predelay as it is. The end result is a much more open reverb sound that really blend sin to the mix without it getting muddy. With reverb on a send it’s also usually a good idea to set the HP so that most of the low end of the tracks you’re sending to it doesn’t get to the reverb, and also obviously set the mix to 100% wet.
Just adding a bit of send reverb to all of the tracks this way (or using an external effect obviously, this basically works the same way in practice, you’re just trading one track in exchange for not needing to use any of your inputs, plus you can take advantage of scenes and modulation and everything else) goes so far toward making what you do in the OT sound like a finished mix.