In my opinion Phil should stick to fighting games. It's the only time he plays a game when he's not solely obsessed with views/$$$. His pride is on the line every time because he cares so much.
Of course, some of his "best" non-fighting game playthroughs were back in peak-Phil circa 2011, like Madden '12 and Supremacy MMA. You know, back when he would use words like gay and exceptional liberally when reacting to game mechanics, which is almost unheard of now. Before he started cleaning up his language and falling back to dumb singing and droning "uuuuuuhhh." Before he started streaming and relying on chat to tell him what to do.
Look at this:
This is prime Phil without stream chat, it's pure gold and insanely entertaining how completely befuddled and enraged he is by a simple puzzle mechanic in Castlevania: Lords of Shadow. This is what people want to see from him, not some fake dancing to Sonic music or reading Danganronpa dialogue.
Nah, if there is one major problem with his FG playthroughs, is that it eventually becomes repetitive with him being salty over losing. What he needs is to play harder games, or, go back to older games. (90s or 2000s)
I think a user already posted it's special when Phil does that kind of old game playthrough. This is because he encounters games that are much harder than games nowadays without being brutally sadistic games. Thing is, this slight challenge of those games for Phil is much greater than it seems: for Phil whats a somewhat challenging game he sees as climbing Mt. Everest without gear.
Hell, let's take a look at the most infamous DSP playthroughs ever: MGS3 came out in 2004 (if we take Subsistence, it's 2006), MGS2 in 2001, MGS1 in 1998, Spider-man PSX in 2000, the GTA 3D trilogy: 2001-2004, while Black Mesa is a a remake, it's still a remake of a 1998 game, and so on.
Scarface and P3 both came out in 2006 (albeit FES came out in 07 but it still counts)
Crash Bandicoot trilogy: 1996 to 1998
Jak 1 and 2: 2001, 2003 respectively.
RE3, CV: 1999, 2000 respectively.
See a pattern here? there are obviously older games that didn't yield for notorious playthroughs (classic Megaman, surprisingly. He struggled a lot more with the X series) as well as newer games that did yield for far more infamous playthroughs but still. (Dark Souls trilogy immediately comes to mind as an example of this)
I think while fighting games definitely supply a good stream of hilarity, it's harder games what ultimately cause him to rage and make up bullshit excuses far more than
your standard fighting games. You don't listen to Phil blaming the fucking physics (CB1 HD) for example.
Older games seem to cause more trouble for Phil, most likely because they were designed for a different audience (and sorry if I come across as an old man bitching about them newer games) an audience that didn't need to have their hand held every 2 seconds, no microtransactions or pay to win BS. The games did offer help every now and then, but it ultimately was up to the player to figure shit out.