Well from bitmain's viewpoint isn't it easier
Pump the price of LTC to 150-250 dollars
Then build L9 7nm or 5nm LTC miners.
They are a business first they have clearly shown they don't care that btc is the number one crypto-coin in the world.
From a value move boasting the price of LTC to sell newer LTC gear looks doable.
While pumping btc price to 15k has to be harder to do
and the ½ ing cancels the price pump to 15k.
While the price pump in ltc has a long time to be cut by the next ½ ing
If bitmain does not do a ltc pump canaan may do it (they have yet to do anything but sha 256)
But I feel someone (asic Builder) will try this switch to LTC-Doge Idea.
Last I recall the L3+ was a 28nm but Maybe it was a 45nm chip.
LTC- Doge are worth 2.8B + .3 b = 3.1b
BTC - NMC is worth 142.891b + .007b = 142.898b
certainly easy to pump ltc.
My fear is rather then push BTC/BCH/sha256 they move towards ltc/doge
with a block size of 6.25 btc will need to be 15,000 usd to stay even.
ltc has a block size of 12.5 for next 3 years.
If it boosts to 300 a coin a 5nm LTC miner will look good to asic buyers.