If you want to make an argument for gear changes, spellcast is not your target. As Byrthnoth stated during a different debate, access to windower macros from normal macros is a greater degree of improvement than from windower macros to spellcast. Even then, I cannot think of an event where such improvement is a necessary condition. Although you and Jem claim 100 is possible without cheats, neither of have you have proof. It is an asserted claim, not a proven one. It's existence is purely statistical in nature (In that we only entertain the possibility because we assume it is possible to get the easiest floors and the easiest jumps).
On the issue of severity of cheats, it should be painfully obvious that some cheats will help you more than others. If you cannot understand why, then you ought to consult someone. In fact, clipper and fillmode, taken to their extreme, are more powerful than anything windower or spellcast macros offer. You can use over six pieces of gear through macro linking (A technique I proudly employed when I played PS2 1.5yrs ago). Contrarily, you cannot compensate for access to absolute 50' vision. You cannot compensate for full-time flee. You cannot compensate for the ability to run through walls. You cannot compensate for instant knowledge of the number of lamps in order/same-time objectives using a single lamp. It is painfully clear that not all cheats confer the same benefit.
Finally, to tie a few loose and unaddressed ends. As previously stated in my former post, is on par with pre-nerf AV. I could grant you the reaches and over-jumps as successes (unnecessarily help your argument) and we still have no instance where tools are uninvolved. The absurdity of your assertion is to the degree that we may say AV was defeatable by having everyone's shadow ring and mantle procs. It's only by virtue of the fact that the possibility exists that you can make that claim. Consequently, the weakness of the English language is that you don't realize the absurdity of the claim because its inability to elucidate non-subjective differences in possibility without reference to numbers. The analogy draws closer regarding your treatment of gear proliferation and skill.
With regard to gear proliferation, it has been said that the gear is not intended for everyone. Who are you and what department of SE do you work for? There's a difference between consequent action and intended purpose. I, hopefully, do not need to explicate that on BG. Even if that is the intent, it seems quite absurd to accept it. Acceptance lends support to those who warn that it will serve as a cap for future gear and justify minimal stat boosts reminiscent of the level 75 era. The absurdity of it all is that people familiar with mechanics can tell you that 1STR will sometimes have zero effect on your damage. The consequences of accepting your opinion are objectionable even if subjective (As your opinion is).
With regard to skill, this claim is the most absurd of all claims I have heard. First, it demonstrates ignorance of the topic at hand. The only tools that lend themselves to skill are windower and spellcast. These tools, used extensively, manifest your understanding of the game mechanics by enabling you to particularize gear as it applies. The ability to particularize gear effectively depends on your "skill." Contrary to your opinion, Nyzul undermines the effectiveness of skill, characterized as knowledge+gear+execution+planning, because groups equal on all accounts will display vastly varying results. If your argument were to say that having shit for gear compared to quality gear makes a difference, then you have to extend that claim to many other events. The difference, however, is that one cannot substitute skill with luck to the degree that you can in Nyzul because it fails to impinge upon central aspects of the event. Specifically, objective-specific information, floor objectives, and floor jump value. Tools enhance a group's access to the first point. Nothing affects the latter two points (At least, to our information). Yet, in no other event does enhancement of the first point, proliferated via tools, affect the result to the degree that it does in Nyzul. Therefore, Nyzul's demonstration of skill is worst than many other events where access to tools cannot compensate for skill.