In comparison to theme parks, figure choices can turn on a dime though - 12-18 months later suddenly its a Hoth wave or a PT Jedi wave. Parks though... when you say "over time" you are talking about time segments of 5-7 years. That's how long this new ride has taken from development to opening - 5-6 years - and that process began with the excitement of a new SW trilogy coming.
And the reality is, if Galaxy's Edge underperforms (and the trajectory so far doesn't seem to be what you'd expect with a new and "final" $250m movie around the corner - shouldn't people be frenetically SW for the climactic end of Rey and Kylo?) it will be blamed on Star Wars in general, not the ST choices.
In that scenario, do you seriously think Disney will then start adding rides based on the OT or PT? It would require them to assign blame to their own self-produced product and embrace old content they had no hand in producing.
All I'm saying is I would have loved to have seen an immersion into the ANH cantina, or Jabba's throne room, or Hoth battle, or OT Death Star/stormies instead of a huge world that is "generic Star Wars" melded with ST-specific rides. Madame Tussauds was better balanced with OT/PT/ST.
What they don't seem to understand is that the ST's huge box office is more a product of the triumph and singular dominance of branded IP today (SW being one of the top five entertainment brands of all time) along with Disney's staggering capability in terms of marketing (and market share) than genuine obsessive/enduring love for Kylo Ren, Rey, the FO and the Resistance.
That enduring love is (supposed to be) what powers hunger for rides and experiences like Galaxy's Edge. I'd argue there isn't much for this ST world and characters.