Perceptor doubles down on the value then by turning into nothing. I mean the functional part of the microscope is and has always been the tube on his shoulder. The rest of him doesn't look like a microscope stand of any vintage, it's just a Cybertronic lamppost.
Still, if that's what you want, I just keep going back to this, we have the Titans Return and Studio Series ones right now, which are respectively the perfect toy-based and cartoon-based representations of the character. There is literally nothing to complain about. If you have any complaints with one of them, it's probably because you want the other one. This is one of the easiest characters to get right and it's no great surprise that they've done so both times.
A part of me wishes it was possible that he could have been in Siege and got a new, different, probably vehicular alt mode, but considering the Soundwave that turned into nothing, that's much less likely than that he would have turned into a slab of robot with a tube on.