I get that, many aren't that fussed by PCs and have invested in a range of VSTs, so lean away from using them so much. I'm in the other camp, I've bought into the PC fomat, and own all but Softtube (ILok) and the PC Gate. Working form a HD laptop, I find the PC work really well for their small footprint. I don't tend to use stacks of plug ins but I do like seeing 2 or 3 at a time when I'm working with them. The way they intigarte into the console means I often have several channels of PCs open at once, so maybe the buss and the channels that feed it. 12 could open at a time (as in 4 channels of 3).
Using the FX channels as a VST insert, creates a lot of dead space on the screen. I set two channels up for demo (It's a 1080/1920 res with the control bar open). In the first you can't see what both the FX plug in are when the QCEQ is open (I tend to use and it the only compulsory PC so fair example), and in the second, with a CA2A in place you see how much dead space they cause. If I wanted to have two PC open at once, it would nice to see both the VST names so I could open either f them at a quick glance.