Last week I mentioned wanting to play Project Wingman campaigns in VR so I did just that. I started a new campaign on hard, as usual, and with the "Budget Cuts" modifier (less ammo, more damage to everyone and reduced handling) for additional challenge. Difference in ammo counts was a bit shocking at first (I didn't expect it to go THIS low) but it's still doable and fun. Each mission requires more precision and patience, other than that, it's not that different.
I also tried playing one of the missions on the "Mercenary" difficulty (without the modifier) to give it another shot but... yeah, it's just not for me.

Since I'm in a flying mood I decided to try a little experiment as well. I set up my flight-stick as a controller for PCSX2 and started playing Ace Combat 04 with it. It was alright.
It obviously isn't as fun as playing a game created with HOTAS support in mind - controls feel a bit stiff and the cockpit view is rather limited but I don't hate it. That said, I'm not the biggest Ace Combat fan (never grabbed me as much as PW) so I'm sure someone more dedicated could have more fun with this setup.
I only did 2, maybe 3 missions so far so I'll play a bit more before deciding whether I want to continue or not. At the very least, playing it like this is an interesting experience.