P: Please let us change the Pen tool path size and color

(since this wasn't carried over in the merger...)

It is indeed an old issue that Adobe has flat out ignored. From 6 years ago, Adobe's Chris Cox on this very forum: Please let us change the Pen tool path color

As explained above, we cannot go back to the way it was in CS3 because the blend modes we used are not available in OpenGL, or in the Cocoa API for MacOS.

It's the "...because the blend modes we used are not available in OpenGL..." that kills me. Adobe wrote code that isn't compatible with OpenGL, a universal graphics standard? Who's fault is that? I mean honestly Adobe, just make a new blend mode already for God's sake!

This is probably an aged old issue with photoshop.  Is there any plan to have options for the pen path tool?  I am going blind working with it on the mac.  The path line is so thin it blends into the image.  The following two features would be nice.

1.  Have the option to change the color of the pen path.
2.  Have the option to change the thickness of the pen path as it's being created.

I have searched and it seemed like there are also tons of other users requesting these features.  Do developers actually read these forums or it's just a place for us to rant?

While something working in one application certainly proves that it is possible to achieve it may not be at all easy to transfer the functionality into another application that has a different code-base (not sure that term is correct here, though). 
And adding or improving or even fixing any feature should mean an expenditure of resources in coding and testing, so I guess there is something like a »natural inertia« to overcome each time. 

I would welcome an improvement of Photoshop’s Warp functionality but I think I understand why it may not happen any time soon ... 

Of course - multiple times. My take on it is adding Bezier curves warping like you are using the path tool and have it inside something like Liquify so you can save and load meshes.
I do not use Illustrator nor do I own (rent) it. If similar features are available in a sibling application - why should it be so difficult to add to PS?

Have you lent your support to the existing Warp-Feature Request thread/s? 
Personally I expect little development there as Illustrator’s Envelope Distort offers a work-around not within Photoshop but within a »sibling«-application. 

Quite a lot of new features - that are questionable or useless to many photographers and photo retouchers. And no I do not consider most Adobe "magic" or "smart" or "aware-this" to actually work in for professional demands. Making the path readable with a user defined color stroke (like it was pre CS5) or (my #1 need) adding more grid lines and save and load mesh to warping would really help a lot of retouchers.

I recall many of us were worried that the CC model would stifle incentive to add new features and fix or improve others - now that certainly seems to be the case.

As much as I consider the exclusive Cloud License model a regrettable decision by Adobe I don’t think your observation is quite accurate. 
For example while I do not consider Face-Aware Liquify of great benefit to me personally it looks like some nifty programming. 
https://helpx.adobe.com/photoshop/using/whats-new.html

Can we just finally say that the move to CC subscription has pretty much brought development and JDI fixes to a halt in PS compared to the pre subscription model. I recall many of us were worried that the CC model would stifle incentive to add new features and fix or improve others - now that certainly seems to be the case.

Glad I could help.

Cristen, Thank you. I hadn't seen the choice of shape vs. path.  Not that I know this, it will make my life a lot easier.  You rock.