"3. the option to switch Period helmets. Since it was used for so long by so many operators it would be amazing to switch out the helmets to match the period. vintage through modern (90's era)."
TOTALLY agree, and I've been talking to Dino about that possibility for the last three years (my candidates to Dino were the P-4 [1950s/early 60s], HGU-2P [1962-1986], and HGU-55P [1987-present-ish]). Unfortunately, Dino tells me he is limited to one helmet. I told him my vote is for the HGU-2P, if limited to one, as it covers the longest period of the T-33's service (1962-1985/86).
Right on, Kent. If only one helmet HGU-2/P good choice. Still, in my aviation book the P series flight helmet belongs to the T-33 like wings belong to a bird.
Here's a couple of T-33 drivers during the 50's and early 60's :



And please give them pilots a natural, relaxed stance, like the're enjoying the flight. Not like a stiff plank with their helmets smack dabb to the headrest, scared to death, ready to eject... ;-)
Hand on the windscreen frame during taxi ?.....

( well, you asked what i'd like to see, Joseph.... ;-)