At the moment I find that speed-up/slow-down/injectors work from screens 8, 7 but not 6,5. Ditto the laser (it even works and destroys things previously lined up on screen 1

I remember in Elite one would ponder market prices, see someone appear on the scanner and start to swing the ship around to deal with the threat before even switching to screen 1 (the arrow keys were used for the charts whereas ship roll was ,. - I suppose the keyboard mappings people now use is one source of conflict).
Maybe fixing these issues (at least for screens 8,7) means a lot of work involving the core of the game and has been discussed before?
As a sideline it could be a more plausible way of doing time acceleration, one nods off looking at market prices and the clock runs faster and faster until something appears on the scanner (whereas those friendly craft already on the scanner can drift more quickly off the back-end of the scanner when your injectors have run out - this technique was sort of used when playing the original Elite as rendering the space graphics was not needed for a while whilst the player viewed screens 7,8 etc. so the game 'sped up'.