With all the MK1s finally reproduced this year, hopefully 2024 will be the year of the MK2A. A Regional Railways BSO is an obvious missing choice, but a few BFKs wouldn't go amiss either.
I too would prefer a 158 with the original EXPRESS branding. I will hold off in the hope that such a version will be produced one day.
I agree on 47475. I would certainly take that one. After Trans-Pennine, it wore that livery for a while when it was allocated to parcels work.
Farish have not made a single MK2A BFK so far. I'm sure there are plenty who would purchase 2 of them for Waterloo-Exeter formations, since there were two of them back-to-back in the middle of those rakes for a good while. Also blue/grey, InterCity and Regional Railways of course. There were also the ex-NSE BFKs and TSOs that were transferred to the north west, debranded and had the light blue stripe painted over the red. Those lasted a while and were common within those rakes, so a regular release would even be justified.