I got a couple espee related ideas.
First, to compliment the recent SD45u, I nominate the Southern Pacific counterpart, the SD45R:
And second, to round out the Tunnel Motor fleet, the SD45T-2R:
In general I really just wanna see some later-era SP stuff, like SD40R's, SD40M-2s, or any of the tunnel motor variants after they had the gyra lites removed.
Maybe we could get some speed lettering? pretty much all of the current models could be remade in late-90s speed lettering appearance and all us SP guys would buy them all again.
One last one: D&RGW SD45s, also something that would compliment recent releases imo, as these guys were often seen with ATSF and/or SP units nearby.