Yes, I made sure to play Boundary Gate all the way through the first boss battle for example. That involves walking around, talking, exploring, fighting a bit, and then yknow, doing the boss battle!
Zerogiar has gameplay up to the first boss battle with some cutscene images (with hilarious health bar amounts because I was playing one handed and hovering over the F9 key to screen shot, lol)
Battle Heat, I just smashed buttons and hit F9. I'll pick the best of the like 40 shots I ended up with. Screen shots of that game are sort of worthless though.
So yeah, I am definitely making sure the screenshots are useful. I don't even think I bothered with title screen shots actually, because I'll be blunt here:
Who f*cking cares what the title screen looks like. A digitized version of the box packaging logos, with some menu choices is about as useful as a ripped condom.
The only game series I have EVER given a shit about title screen wise, was Ultima, because from Ultima III thru V, funny stuff happened on the screen.