Just loaded your preset. The first thing I noted is: why do you limit stereo width with a multiplier of 0.5?
Because I'm giving Stereo Tool an ability to not only increase the width, but to decrease the width if it's too high. The ACR settings are making up for the difference. =)
If you increase that "Stereo Boost" multiplier, you are then limiting the amount of dynamic stereo width processing that can happen, which can brick-wall limit the stereo processing (reduction ability) and the stereo field (reduction forced) at the same time. You're not going to gain much or any peak width which ... sounds like crap.
However, it is possible to reduce the actual L-R signal, but have the stereo field sound wider. The amount of L-R signal, and what we "feel" as "stereoness" or an amount of "head wrap", is NOT a linear thing at all.
If you just want the final sound to have more of that "head wrap" feeling over-all, you should instead try increasing the ACR "L-R Level Boost" setting to above 100%
. This will give you an exaggerated un-natural width you might like, and also maintain the other things in this preset which allow for consistency, and the considerations related to how we localize sound.
One thing about the bass: it sounds a bit odd on my favourite test song: Owl City - On the wing (very difficult to get it right with this song)
It's the Immersive Bass and Basstardizer settings needing refinement. That's by far the least refined thing in the preset. Brand new effects for the preset, and for Stereo Tool too. I have pretty good settings there, just pushing them towards more subtlety without losing consistency. Musicality is where I want it though, for the most part.
The rest of the preset has 2.5 years of work in it. So, it's understandable that something that new would need a little more work, for the present and maybe for the effects themselves. I also changed True Bass settings because of that. I didn't enable them just because I could. You will see from how few things I'm using in some places, compared to others. (like no input AGC with proper input loudness, who does that? hehe)
I only expected one of those two things so far, even if it's personal preference. I would change "a number of things" about this preset, if it was designed for my personal preferences. I haven't created a preset for my own preferences in over 10 years, even though I still enjoy making presets designed for use as factory, designed to be as usable as possible for others. Almost as much as I enjoy doing way more extreme custom presets and owning a market.
(and no, extreme != loud, lol, just... not good for a factory preset, and also some personal secret tweaks and tunings i haven't put into anything public yet)
addendum: It's pretty easy to brick-wall the stereo field in multiple ways with several current generation audio processors, and Stereo Tool is one of them. But at least the problem can be worked around in Stereo Tool, unlike 3 current flagship processors that I obviously won't name publicly. It's especially audible in one of them that [redacted]. It brickwalls the stereo processing and the stereo field like crazy, which is also constantly shifting its artificial "borders" around because of it fighting itself with multiple improperly designed implementations. Only Leif's processors get it right, even though it's a simple implementation of the idea.