Any liposuction of the Mons fat pad will help in this regard. However, the degree to which it will increase your visible penis length is variable. Depending on how much will be needed, this can likely be done with oral sedation.
There are biologic, immune
modulating, and surgical treatments for Hidradenitis. In my office, we
begin by controlling the onset of HS and the longterm scarring is
mitigated. Treatments for hidradenitis scarring are many including
topical treatment protocols and laser therapy.
Best,
Dr....
While it may be possible to further decrese the thickness of your already seemingly "adequate" subdermal fat layer, you might want to consider talking to and being examined by a qualified plastic surgeon. An excessively thin pubic cover might render sexual relations painful and...