Depends on the IP.

Depends on Asian reaction to Switch. If Asian Switch sales are okish and even only at 3DS levels, then there is less incentive to release Switch games. If the lack of Asian software sales means that JPN sales alone are not good enough (based on expecations), then they wont bother with Switch.

Switch carts probably use compression. I thought it was being released in episodes as well.

Eitherway Switch would be a good fit for anything Final Fantasy given Japan.

Until we see indications of how sales will turn out once they've started to saturate the WiiU userbase, I think publishers will remain cautiously optimistic.
Nintendo have not yet made a push for the Switch to replace the 3DS, and even without the big droughts for games on WiiU, initial Switch sales shouldn't come as a big surprise. I for one always said I expect Switch to be sold out for months, but that information alone will not give me a proper indication if it will end up at only 20m lifetime sales, or 60 million, etc. That won't start to become apparent for a while longer.

Blurays also use compression, in fact many games are beyond 50GB now. I dont think they have much room on the Switch due to the limited on-board storage.

These episodes are gonna be more like full games on themselves. Japan is not a big country for FF anymore, barely 1/6th of XV's sales came from Japan. We'll see though how they translate DQXI to the system, it's also UE4.

This means close to 0 if the hardware can't handle the game. My Intel Core i5 processor and EVGA Geforce graphics card are perfectly compatible with Unreal Engine 4 as well. Except most modern UE4 games run like complete garbage and are pretty much unplayable on my rig even at the lowest settings. Because my specs are not up to par. I need more RAM, etc.
There's a difference between UE4 games and UE4 games. You can make them as demanding as you want, and scaling them down after the fact won't resolve the problems that can occur when riunning the games on a lower hardware than you originally had in mind when designing the game.

WiiU could handle Unreal Engine 3 as well, but the only UE3 games it got were Gen 7 ports, and Mighty No 9.

Both the CPU and GPU in Switch have intentionally been clocked down by Nintendo.

"As things stand, CPU clocks are halved compared to the standard Tegra X1, but it’s the GPU aspect of the equation that will prove more controversial. Even while docked, Switch doesn’t run at Tegra X1’s full potential. Clock-speeds are locked here at 768MHz, considerably lower than the 1GHz found in Shield Android TV."

"But the big surprise from our perspective was the extent to which Nintendo has down-clocked the GPU to hit its thermal and battery life targets. That’s not a typo: it really is 307.2MHz – meaning that in portable mode, Switch runs at exactly 40 per cent of the clock-speed of the fully docked device. And yes, the table below does indeed confirm that developers can choose to hobble Switch performance when plugged in to match the handheld profile should they so choose."