That could be intentional to make it look fake.

https://realotakugamer.com/nintendo-introduces-new-ways-for-fans-to-have-fun-at-e3

Thats actually really smart.

Wireless keyboard for Switch

Click

Mario tennis Aces download size is 2 GB.

http://www.nintendo.co.uk/Games/Nintendo-Switch/Mario-Tennis-Aces-1325791.html#gameDetails

Being more than twice the size of Ultra Smash is a good sign to end all worries and doubts about it's successor Aces.

I just noticed Banner Saga launched on Switch. If you like the tactical battles of Fire Emblem, give it a look. It's different, very narrative focused but is highly regarded. And of course, Banner Saga 2 is coming later with Banner Saga 3 to follow so if the series interests you, probably want to jump on now.

I might bite, but if you can anwser any of these questions i'd appreciate it.

Is the story good?

How's the gameplay?

How difficult is it?

If I wanted to, would I be able to make an OP character or is their no grinding?

Is their fanservice or characters in light armor?

How long would it take to complete the main story?

Well, I have limited experience with the franchise personally, just wanted to let people know it launched cause I know it's well regarded and launched without much fanfare.

It came out on Steam some time ago.  Check some reviews on it from there.  Totalbiscuit I believe made a video on it as well.

I will say the story is pretty well regarded, fan service isn't much of a thing, and it's supposed to be pretty challenging.  The rest I can't answer comfidently.

Trying so hard not to be negative these days, but I swear to god Nintendo better deliver this E3, the Switch is currently on a trajectory to be the most disappointing system of all time for me.

It started out with such enormous promise, only to become a dumping ground for ancient ports, shovelware, and mediocrity.  Not a single high quality new game since Xenoblade 2 last December.

I love the hardware and last years second half lineup was amazing, but the software output this year has been absolutely pathetic so far.