I doubt seriously that Stern will use non-LEDs in any new manufactured games. LEDs are simply superior in almost every way and require less energy and less maintenance.

Its a bit harder to switch back and forth in production with different bulb types and LEDs required less expensive electronics and power supply in general.

After MMR, I fear the days of sub-$5000 pins are gone. $5,000-$6000 will probably be the new norm.
Stern probably makes a new pin for about $2100, sells it to distributors for $4100 and distributor sells to you for $5499.

The remakes cost much less to produce with licensing taking a decent chunk. There is much less backend expenses, R&D, testing, etc so their cost of making the machine perhaps drops to $1700.

These numbers are just guesses, probably no one knows for sure. But LOTR VE makes sense because the cost of production is lower and it would be wildly popular.