One-shot and Lost Caches | Coming in Runes of Power

So im curious…

Can an experimental affix be t6 or t7?
If so…
If a glph of insight is used on a personal item on the affixes other than the personal affix and it becomes exalted…
Could you then…
Have a chance to place that personal affix on a unique when making a legendary…

P.s. im having a hard time falling asleep thinling of the possibilities if you can do the above. Thanks…