I don't care who you have as GOAT. I'm saying that arguing he should be a HW is BS. He could easily be a HW, no doubt, but there's a reason we have weight divisions: weight matters. Height matters too, but there's advantages to being low too, especially as a wrestler. And Jones could not do what he does now if he were weighing 245 pounds. He's not build that way. He couldn't be as agile at that weight. He has a very lanky build, especially from the waist down. We've seen him walk around at that weight when he was powerlifting, dude looked way too big.
Now if he would go to heavyweight, he would have to gain some muscle waist down, correct? In fact, build more muscle overall. You don't think that increases his KO power? I'm not saying he would all of a sudden have bombs like Stipe, as he's not a good boxer, but it definitely increases it massively. Foolish to say otherwise.
To give my two cents on the three specific issues you have:
1: You're using it as a negative against him that he uses his height as leverage in grappling exchanges... WTF that's a testament to smarts and skill? The dude is still a tall motherfucker at HW and could do the same to most guys in the division. Stipe is tall too, and a decent wrestler, but Jones is obviously a better wrestler, I think he's a little taller and if not then definitely longer. That's the only contender, as far as I remember, that would be comparable to Jones length-wise.
2: Questionable stand up? He's not "getting away" with his stand-up because of his reach - he's come up with a gameplan that compliments his reach. Again, the smart thing to do. Can't believe you're actually knocking him for using smart kickboxing to, aimed at scoring points and drain his opponent. Jones' striking is really good. It's not devastating, but it's effective throughout the fight, score a lot of points and the accumulation of kneestomps and body kicks really wears the opponent out. He could easily implement the same strategy as a HW... You're making it sound like all HW's are gifted with the same length as Jones, which is far from the truth. Jones is still tall at HW, but he would probably be too heavy considering the way he's built waist-down.
3: You're saying people would disrespect his power and just walk through it? That's dumb. As I mentioned before, if he goes to HW he is forced to build some muscle and obviously put on some weight. That undoubtedly increases his power. Basic physics. If a man weighs 245+ his hands will hurt you. Don't get it twisted my man... He still wouldn't be able to land one bomb and end the fight, as he simply does not have very good boxing (his only weakness IMO), but he will have power if he can land though.