I've been revisiting anno 2205, infamously the ugly duckling of the Anno series of RTS games. I don't mind so much the fact that it's different, lacks customisation and random map generation - I'm bothered because the game is so slow to progress through on challenge settings, and it feels like a game designed just to artificially waste your time; in other anno games, you can always pull tricks to dig yourself out of economic crisis - selling off assets and surplus goods, completing quests for other parties, or taking loans. 2205 is very very confined in terms of what you can do to financially recover in the early game and forces you into a lot of military events.
PF2e relies a lot more on tactical decisions than 5e, so I'm not certain how well the mod works depending on the other systems it has to lean on - missing mechanics can wildly unbalance the maths due to the assumptions it's built on.
Assuming it is fully implemented though, flanking, feinting, or another way of applying off-guard to an enemy would increase that 65% chance to 75%. Intimidating the enemy can push it up to 80 or 85%. Maybe have an ally aid the attack and get up to 95%. Crits also change gameplay quite a bit due to the 10 over/under conditions. A 65% chance to hit contains a 15% chance to crit, 75% a 25% chance, 85% a 35% chance, so the additional misses get balanced out by the additional crits beyond 5e's static 5% chance. A single character generally doesn't have enough actions to apply everything themselves though, so you have to coordinate actions across the whole team to be effective rather than each member being an individual powerhouse.
Maybe I should try it again. I like the idea of the three action economy and teamwork from what I've read of pf2e. The mod didn't have all the normal tutorial stuff, if I recall.
Does it do initiative the same way as 5e? Because that sounds like it would make teamwork annoying. "I need you to distract them, but you rolled low on iniative and I can't just like wait for you to do it"