Pluto's orbital inclination is ~17, Saturn's tilt is ~27 - the angle between Saturn and Pluto (near perihelion) is ~27.
So the rings might point to Pluto at one particular bit of the orbit?
Except again with the back of the envelope, it says near perihelion, Pluto is ~30 AU from the Sun, ~8 AU above the orbital plane of all the other planets. Saturn's orbit is roughly 9-10 AU from the sun, so depending on position, to get from Saturn to Pluto is anywhere from 20-40 AU across the ecliptic, 8 AU up. tan ^-1 (8/20) = 21.8 degrees. tan^-1 (8/40) = 11.3 degrees. So the 'angle between Saturn & Pluto' is never 27 degrees, it peaks between 11 & 22 degrees each time Pluto reaches perihelion. Why use the earth's ecliptic as the reference point, anyway, if all you want to work out the elevation of Pluto as seen from Saturn? Why wouldn't you use the Sun's equatorial plane? Or even better, Saturn's ecliptic, since that's what you'd use to measure Saturn's axial tilt. You end up with slightly different numbers, though none of them are 27.
Subtracting Saturn's distance from Pluto creates a 2:1 ratio
No it doesn't. At one particular time, the distance from Saturn to the Sun might be half that of the distance from Saturn to Pluto. But at another particular time, it'll be 1:3, and at another it'll be 1:4 and 1:5 and will even get close to 1:6. Why is the 1:2 bit meaningful, and none of the others are?
and (for now) they share ascending nodes.
No they don't. If you mean the longitude of their ascending nodes is the same, then they're still not. Mercury's & Mars' are closer together, so does that make them related too? If you subtract Mercury's aphelion distance from Mars' perihelion, you get a distance in a ratio of 1.96:1 with Mercury's aphelion. Doing the same with Pluto & Saturn only gives 1.95:1. Plus Mercury's equator points at Mars, far closer & more consistently than Saturn's points at Pluto. I can only conclude that Mars was ejected from Mercury at some point. And that the Romans knew it, and thousands of years ago were writing slashfic depicting Mars & Mercury being joined and then coming apart.
There's also the issue that picking a different reference plane, e.g. the sun's equatorial plane instead of the earth's ecliptic, or Jupiter's ecliptic, means those longitudes will change. With one particular reference plane, they're close together, but not the same. Choose a different reference plane, and they're not as close together anymore. So how is there significance to the two numbers being not quite the same with our current preferred reference plane?
What you're doing is like taking a street directory, and saying that my house is in grid square c7 on its page, and your house is in grid c7 on its page, and concluding there's some special link between our houses because hey, they're both in c7. Or if I stand at a certain point, the elevation of one skyscraper is the same as the elevation of the local mountain, therefore there's a connection between the two. This number's about the same as that number, therefore connected. And done by aliens. Even though that's obviously ridiculous. And even though your 'same' numbers aren't actually the same at all.
Cylinder Seal VA 243 is a depiction of our solar system and the gods appearing in the Enuma Elish.
No, it isn't. Takes about 30 seconds with google to see that the idea that it is is basically down to one bloke making crap up.
But while you're making crap up, why not include the number of the seal as more evidence? 243 = 7^3 - 10^2. If the sun is god #1, mercury god #2, etc, and then the moon & the alien's home planet are gods #11 & 12, then 7 = Saturn and 10 = Pluto, so the very number of the cylinder itself is clearly another hint that they arrived at the picture on the cylinder (i.e. an accurate description of the solar system) by starting with Saturn and then removing Pluto from it.