If you edit the first paragraph to be a bit more user friendly and less abrasive, I think this would be worthy of being stickied...
Things I would include
Exhaust manifold/header: No, you do not need EM but you will realize better performance gains if you are custom tuned to account for this mod
Turbo Port/Polish: No, not necessary. This, much like a catless uppipe, will simply increase the efficiency of the system, not necessarily a huge increase in performance. While this mod will certainly change the dynamics of your turbo system, it will not be outside the safe control of the stock ECU.
TGV deletes: Yes, you need EM to delete the inevitable CEL that will result from deleting your TGV's and you need some way to tune for the increased airflow across the RPM range
Boost controller, manual or otherwise: Yes, kind of. Any time you raise boost more than 2 psi on an otherwise mostly stock car, you should add engine management. The argument could be made that 2 psi increase or less is not going to do a whole lot to hurt you. That being said, you should not be increasing boost without aftermarket exhaust, and you should not have aftermarket exhaust without EM, therefore by the transitive property, you should not have a boost controller without EM.
Turbo inlet hose/any pressurized post-turbo piping or hoses: Absolutely not, these do very little to change the performance of the car and really only help making the turbo parts easier to remove/install.
Walbro Fuel pump: No, your fuel pressure regulator prevents a higher volume pump from overpowering the injectors and thereby altering fueling. If you change your fuel pressure regulator in any way, you will need to account for that change via tuning, but an otherwise drop-in Walbro replacement does not need EM.
Larger than stock injectors: Yes, you definitely need to tune for larger than stock injectors. A car will start with over-sized injectors and will likely drive "okay" but will not run properly and will be way too rich to drive aggressively.
Fuel Rails: No. See discussion of Walbro pump. More potential flow to the injectors does not necessarily mean your injector will inject more fuel unless you tell it to. Very minor tweaks may be needed if you do this mod, so minor you would probably never notice them and they would do no damage.
AccessPort vs OpenECU/RomRaider/Enginuity/Tactrix: Yes, AP is the easiest and most reliable way to modify your stock computer. The "DIY reflashes" are also very good and much cheaper. If you think you are going to need engine management, do not immediately discredit the DIY methods. With proper education, patience, and a careful and inquisitive mind, flashing a stage 2 car yourself is reasonably safe and easy to do. Making the choice to do it yourself is basically a measure of how confident you are that you can follow carefully outlined procedures and use good common sense to troubleshoot a problem if something goes wrong. The Cobb AP is basically idiot proof, but you have to pay for this feature, as well as their customer support.