Sure, why not:
* Mind; intellectual curiosity is essential.
The mind sphere doesn't really represent intellectual curiosity though. It represents the desire to predict, control, and posses. It does not value knowledge for its own sake, but for the power it gives.
Metamagic probably fits your reasoning better. It is the sphere of knowledge for the sake of knowledge. Oghma's archangel Embarr represents the Imagination.
Creation might also fit. It involves an interest in coming up with completely new ideas, with the willingness to toss aside old hopes and preconceptions when one stumbles upon something better.
Sun could fit too, as it represents insights and the search for truth.
* Entropy; nature is probably more appropriate, but I think poor Agares gets a bad rap for embodying an essential principle for recycling resources. You often have to tear down the old to construct the new. Also it's often as fun, if not more so, to break something than build it.
Entropy in Erebus is better described as Despair. It has to do with obsessing on which can never be to the detriment of improving what can be improved. It doesn't have that much to do with the decomposition required things to start anew.
Death also has to do with giving up, but in the sense that someone tired of playing the game withdraws in order to allow others to take his place. This is probably closer tot hat you are thinking.
Fire has more to do with the revolutionary, purifying destruction of the old to make way for the new.
Mulcarn also described his sphere of winter as a necessary rest and return to a previous state that is needed for nature to begin anew.
Doing things just or fun in part of the Air sphere. Tali is highly destructive although in no way malevolent.
* Ice; I'm fairly conservative in temperament, although not politically.
Ice isn't so much conservative as it is reactionary. It does not just want to maintain the status quo, it wishes to return to the status quo ante. It is very much about nostalgia and the idealization of how things used to be.
Conservatism is more related to Earth, although that sphere mostly pertains to honest hard work and the benefits thereof.