Honestly, you are over thinking this. There is a reason 90% of shooters using a 30-06 sporter settle on a basic 3x9 scope - Because they work. You talk about wanting to use a variety of full and reduced power loads - That's fine, but you will have to sight in for each load, no matter what scope you use. In practical use, a 30-06 can be sighted in a couple inches high at 100 yards, and stay on target (big game) out to about 250 yards or so. If your shot is farther, aim a couple inches higher, depending on range. For any real long range work, you will need a laser range finder, and accurate knowledge of the drop on the load you are using.
For hunting use, if you insist, I think a BDC type reticule is a better choice then having to twist knobs - its quicker and just as accurate as long as you know the trajectory of the load you are using, and how they match up to the "dots" in your scope.
Parallax adjustment is a rare option on, and not usually needed in a 3x9 power scope.
For your budget, and use, the Leupold VX 1 series is good, as is the Burris 3x9 Full-field, and the Nikon Buckmasters series and the Bushnell Elite 3200 series. - All are good serviceable and reliable glass in the $200 range.
Larry
Yes, perhaps over thinking. But in reality, just trying to find out as much as I can before I spend the cash, then find out I made a mistake.
Given the trajectory of standard ammo...sure, no need for any twisting of dials.
But when I compare the trajectories of say 2650 fps. to 1600 fps (jacketed vrs. cast) I see as much as a 10" difference in practical ranges. So having some equivalent of a military tangent sight's ability to "move it up a few clicks" seems a fair idea.
When you start to study graduated reticles you quickly realise you can use them as range finders... then you find out about FFP vrs. SFP... and how some scopes have Mil Dot reticles but MOA clicks, and on and on.
To be honest, it all seems royal PITA. Never considered any of it with magnum handguns... Sighted dead on at 100... expected to use 6 o'clock hold for mid range... didn't take long shots.
I find myself asking, "Why is any rifle sold without iron sights?"
That said. if you really want precision. No doubt glass is a good way, if not the only way to go.
Doing it on a budget is the bigger PITA, LOL!
I mean it's easy to list the traits you want, once you know what they are... not always wallet friendly, LOL!
So yes, If I knew I was going to craft one particular load, for all uses... I'd say, "Heck, don't really need more than the tradition 4x scope for hunting, if that."
Just grappling with, "Which of the compromises in my price bracket are the correct one's to make?" Which of course is somewhat personal. Seemingly has a lot to do with what sort of math you want to keep in your head.
Perhaps causing a little of the over thinking is, I don't have much practical experience with glass. So I have to beat it to death to have some feeling I know I've not missed something important.
Because really... last thing I want to do is assemble this combination and the realize... "Ah crap this ain't right... now I have to start over... I can't call it 'settled'".
But like always... if one had unlimited funds... "settled" is a lot easier. Learn what the best is... then just go get it.