Honestly, the question "are the bases too big" makes absolutely no sense.
Firstly, do we expect P1 to launch an investigation into the size of everyone's display space, take into account the many varied display pieces we may have, make a detail, data based, analysis of the probabilities regarding how many pieces a customer is likekly to own at any given time, and then produce bases based on an average cross sectional area of the space remaining?
And secondly, this is ART, it doesn't need to conform to some kooky ideals like standards, it's an expression. If it doesn't fit your ideals, then keep walking - don't buy. It should NEVER be the responsibility of the artist to compromise their expression to suit a market analysis, it's up to us, the customer to make compromises if we want to own the art.
Ultimately, these statues are luxury items, and they really don't need to conform (maybe to some material safety laws) to anything.
So, "Are the bases too big?" - No, your living space and display area is too small. Now, shall we discuss if that Hummer H1 you've got on order is too big, because it won't fit on your driveway?