Fred Picker and Zone VI Studios, when they existed, marketed a Zone VI Print Developer, which they claimed avoided Dektol's "aggravating dumping of the shadows." Which means that they, at least, believed Dektol pushed the shadow detail up onto the shoulder of the paper. I believe their developer was the equivalent of Ilford Bromophen. I still use it. (Note that "dumping shadows" is similar to blocked highlights on a negative.)
Curves for different print developer/paper combinations would tell you the story. More information squeezed onto a rather flat rounded shoulder = "dumping of the shadows." A long, steep shoulder = great shadow detail separation.
A different paper with a straighter, steeper shoulder will give you more shadow detail.
The film used would make a bit of a difference as well. Shallow long toe on the film coupled with the flat rounded shoulder on the paper and you get a double whammy... The opposite would help shadows. If you're shooting a film with a long toe (e.g., Trix-320) then switching to a film with a steeper toe (or overexposing the Tri-X to get the shadows up on the straight-line portion a bit more) will gain you more shadow detail from the same developer/paper combination.
That said, I don't plot curves myself. There is, however, a lot of info out there and, doing a few comparisons in the darkroom with the same neg and paper tells this and a few other tales.
To answer your question from personal experience. I, too, have found Dektol to dump shadow detail a bit (in comparison to some of the other developers I use), something that can be gratifying at times when you want to move some of that detail to black. I think this is a characteristic of standard MQ developers in general. PQ developers like Bromophen seem to deliver a bit better shadow detail while retaining a similar overall contrast as the MQ developers. Bear in mind, this is for "standard contrast" or "harder-working" developers. Softer-working developers will always give more shadow detail, by definition, and softer general overall contrast. There are lots of special formulas with other developing agents and their own special characteristics. Some swear by Amidol, others by Ansco 130, etc.
So, try switching to a PQ developer or a softer-working formula and see if you like it. Also, search the web for various paper/developer curves and see if that gives you any hints as to which specific developer might fit your needs. Read up on the families and characteristics of paper developers to find what candidates for experiment appeal most to you.
Hope this helps,
Doremus Scudder
www.DoremusScudder.com