... isotropic ...: It doesn't let you you choose the order to execute previous durations ...
So what? Does it really matters wether you first draw 2 cards and then get +1 action or reversed?
Of course in RL there is the trouble, that you have to do all yourself - if one remember in time, what iso does automatic.
I think the point is that no, it doesn't matter (with the existing set of duration cards), but a slavish devotion to the rules (which explicitly say you can choose the order) would demand that you can choose.
Similarly, iso lets you choose any action card with Scheme even though choosing a card that won't be cleaned up is the same as not choosing one at all.
In the former case, the letter of the rules are ignored for the sake of convenience; in the latter case, they are followed even though doing so causes
even more inconvenience than following the duration card order rule would.
I don't care either way, by the way -- I don't even play on iso -- but that's what I think the observation was.