Apparently not expensive enough to warrant the gimping they got.
well, no. taking something that is too strong and nerfing it until it is too weak obviously won't ever lead to balance, no matter what archetype you're looking at. why would their former level of power have anything to do with how much power they *should* have? if we were to somehow come up with an objective way to quantify the power of an archetype, and we decide that the ideal is to have 5 units of power, it doesn't matter whether something has 1 power units, 6 power units, or 100 power units, the desired target is to hit 5 power units. taking something that has 9 and then nerfing it down to 1 doesn't average things out to 5 power units and make something balanced, it just takes something that was too good and makes it suck, leading to needing to make it better than it's new state.
regardless of how powerful technomancers were in the previous edition, the proper target was to make them about as good as anything else provided the same level of commitment is made. now, we don't have any objective method of quantifying things such that we can point to a given archetype and say it has 1 or 5 or 10 power units, so the best we can hope for is to get things fairly close... but either way, how powerful they were before has absolutely nothing to do with how powerful they should be now; how powerful they should be now is the same regardless of what they were like in a previous edition.