I mean, no power "has to" abide by previously established precedents or design theory, but IMO it *should*.
Well, some pool attacks arguably perform better than the tier 1 or 2 of bon a fide sets, but I think the question is to what extent should build decisions, such as power pool prerequisites, exist. For me, it is important that your power picks be something that you actually have to put some thought into, and whether what you'd be giving up in order to select power A is worth taking it over power B. There are already vanishingly few consequences to just picking powers will-nilly, so I see reducing them further as detrimental. I mean, we have people asking to be able to select entirely different powersets or ATs altogether...