I'm currently going through the insurance process to get phalloplasty (finally, that only took over a decade) but I'm intersex (never been tested but with junk like mine it seems like the obvious answer lol) with no desire to ever be mistaken for a dude, so my goals are a little different than yours (just thought I'd put that out there before I get misgendered- I got here via search engine looking for ways to modify my junk to make it look all pretty and feminine post-op. (I don't mind having a strapless, it just needs to look a hell of a lot prettier or I'll keep getting dysphoric everytime I look at it.)) However, I have a massive interest in body modifications (especially where they cross with gender stuff) and initially I was looking for new bits that worked more like my strapless (with a bit more, er, reliability and that look a little more, er, dyadic lol). So, basically I've had a good number of years to think about all of the stuff you're thinking about (and then some).
First off, your number nine is typically everyone else's number one.
Secondly, the veins thing can and has been done. (Though OMG I wish I'd thought of the coloured veins thing first. I have a friend who is going to be like, "Uh, Why didn't we think of that?") It looks pretty good. Since there's probably no protocol for how to do that one, let me suggest that you wait until you have full sensation again before doing that. Doing it before could potentially prevent you from regaining sensaiton where the "nerves" are implanted since nerve regrowth is a pretty fickle and delicate thing. It's hard enough for nerves to grow back, it's a whole differnet thing when they're stuck trying to grow around silicone. Also, get someone who is experienced with implants and who already knows what a phalloplasty is and how ->-bleeped-<- works for best results.
As far as your idea of a saline erectile device on top of the rigid one (the thing that got me to actually comment here).... well, the first thing I thought was, "DAMN THIS PERSON HAS MONEY TO THROW AROUND!" But then I realized that you might not be aware you were tossing like $20K at what is at best is an almost imperceptible difference and at worst is no difference at all. The thing is that the skin that gets used in a graft is a lot thicker that the skin on a cis dude's member. It just doesn't allow for the same expansion and stretching. You might want to consider putting that money into a scar reduction fund instead.
I mean, I guess technically I can think of one way you could *maybe* get junk that expands post surgery.... my brain is too tired and fried at the moment to hash out the details and figure out if it would actually work.
