
Finoan |

I think it is too much. RAW it works. But that is not RAI. I think it needs errata/houserule fix.
I would follow the idea of a subordinate action. Yes, I know that Combat Grab doesn't have Grapple as a subordinate action. That is why I say that by RAW you can grab anyone regardless of size using Combat Grab. If Grapple was a subordinate action of Combat Grab, then the rule would be that the subordinate action has all of its normal limitations - including Grapple's limitation on what size of creature you can successfully grab. So that is how I would run Combat Grab instead - you can only successfully grab creatures that you could normally grab with Grapple.
That does mean that I would allow abilities that change a character's size of target grappled creature to work with Combat Grab. Titan Wrestler being the most obvious.

Tridus |

Very clearly works RAW. Given that it's been this way since AFAIK the original Core Rulebook, I don't think there's much of a case to say it's not RAI, either.
It's good, but its a Press action so the miss chance is higher. It requires a fighting style that anecdotally I don't think is very popular on Fighter (1h/free). The "it works on any size" part is only really saving you a skill feat since with Titan Wrestler size is rarely an issue anyway unless you decide this is the chance to make a Sprite Grappler... and hey, go for it!
I don't think there's any issue that needs addressing here. TBH, I'd rather take Slam Down and get the reactive strike.

Finoan |

It's good, but its a Press action so the miss chance is higher. It requires a fighting style that anecdotally I don't think is very popular on Fighter (1h/free). The "it works on any size" part is only really saving you a skill feat since with Titan Wrestler size is rarely an issue anyway unless you decide this is the chance to make a Sprite Grappler... and hey, go for it!
I don't think there's any issue that needs addressing here. TBH, I'd rather take Slam Down and get the reactive strike.
That's fair.
I don't hold the same opinion. But it is a reasonable way to run things despite my opinion on the matter.
Very clearly works RAW. Given that it's been this way since AFAIK the original Core Rulebook, I don't think there's much of a case to say it's not RAI, either.
That, I don't agree with. The length of time that something has been in print doesn't have any relationship with if it is intended or not.
For example, the Incorporeal trait providing complete immunity to Strength-based Strike actions has also been in print from the first printing of the CRB. That doesn't mean that it is intended to work that way.