We've got this cage too PH and agree with what you said. The 'high house' and slopes can also be fitted the other way round to make a low house for bar chewers too - bonus!
One thing I have noticed (we may have had ours longer than yours - we put the pups in it once separated) is that the plastic top is quite brittle and the 'hinges' holding the wire roof in were not very strong - and a couple broke off recently rendering the cage escapable! But that may just be the one we had I guess.
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