Enjoy the rear touchpad.

So what legal homebrew is that attractive that makes up for the inconveniences of an old firmware?

Can you even connect to PSN to download your PS+ games, download patches, use cloud saving, use cross-save between PS4 + Vita, buy Vita/PSP/Ps1 games?

Unsure as to cross-save and such gubbins, however you can connect to PSN just fine, and download games and so forth much the same.

Do you consider a PSP emulator to be legal homebrew? because it has a great one.

1. How about support for a Micro SD adapter so you can stuff Micro SDs up to 256 GB (probably even more) into that Vita?

Full PSP emulator, so you can use any PSP homebrew. Also Emulators. Full support for RetroArch, so you can play all that NES/SNES/GB/GBA/Genesis/DOS/whatever Goodness on the go. A N64 emulator is in the works, but not quite there yet as we only now have access to the GPU. It should come soon enough. There are also some really good homebrew games, for example ports of Doom, Wolfenstein 3D and Quake. Downloaders allow you to download any file to your Vita. Finally a true Battery indicator so you know the precise percentage of power left. Plus you can use fansubs for japanese games and there are a whole lot worth checking out! With HENkaku you throw that language barrier right out of the window!

And those are just some examples and the scene is quite active at the time. There should follow new great homebrews regurlarly.

2. Yes, at the moment you have full access to the PSN including the store, online gaming, trophies and Cross-Save. Sony could however fix that at any moment, but even if they do, it will be back sooner or later. 

Only downside: You can't play any games that need 3.63 or higher. But yeah, just wait a lil' bit and that will also get worked out.

Love my vita. Steady stream of JRPGs .If you are not into RPGs it doesn't have a ton to offer.

Its had like 80+ games in eu/us, for 2017.

http://www.handheldplayers.com/released-games/released-ps-vita-games-2017/

In July (so far) it had games like: 

Accel World VS Sword Art Online (action rpg)

Fallen Legion  (timing based button mashing battles)

99 Vidas  (double dragon like beat em up game, with co op, and online)

Energy Cycle (indie, puzzle game) 

Ninja Usagimaru: Two Tails of Adventure (indie, puzzle platforming ninja)

Kinda a weak July, its June was better.

Tokyo Xanadu (persona + tails of cold steel mix)

Valkyria Revolution

God Wars: Future Past

Drive Girls

Cladun Returns: This is Sengoku!

Shu  (looks abit like Ori & the blind forrest)

Farming Simulator 18 (meh)

Plague Road (rogue lite with a great art style and a tactical battle system)