What constitutes a 'Case Queen'?
All my guitars could be considered 'Case Queens' as they spend more of their time kept safe and secure in their cases. That's in part because I don't have that much space to hang guitars on the wall or keep in a 'rack' and try and find some storage solution for the cases. Instead of a rack of guitars taking up space and then another rack of cases, my guitars live inside their case. It makes more sense to me to keep my guitars inside their cases, keep them 'free' from dust, UV, wild temperature swings etc etc - all for a 'few' extra minutes taking them out or putting away.
I am also a 'big believer' in looking after your tools - like any good crafts person will. Just like a good Luthier willl look after their tools, ensuring they are always 'clean' and/or sharp, because they are important to the crafts person to do their best work. That doesn't mean they won't 'use' their tools in case they scratch or ding them - that patina of age and use, while still looking as clean and functional as possible. I'd be concerned taking my guitar to a 'Luthier' with all his 'tools' of the trade looking dirty/rusty, blunt etc because if they don't care about their own 'tools', they aren't necessarily gonna 'care' about my 'tools'.
I don't care about the 'value' of my instruments and therefore concerned about losing money if I play my instruments and they get scratched or dinged - its just part of their 'story' and my memories with that instrument. If I 'cared' about 'resale' value, I'd never buy new as you 'lose' money before you even play it. I care more about the 'value' and Joy it brings to me and, if you wanted to buy 'my' guitars, you'd have to pay a lot more than they are 'worth' on the market to make up for their 'worth' to me with the memories and 'joy' they have associated with them.
I do look after my stuff - I keep ALL my Records/CD's, Video Games etc all in their cases too. I only take out a CD when I want to listen to it and it goes straight back in its case after - that way, it stays clean, doesn't get unnecessarily scratched or dinged by being left out with cats etc around, its stays in 'great' clean condition until the next time I want to listen to it.
When you have multiple guitars, it doesn't matter how you 'keep' them, you'll still gravitate towards maybe a couple and the others sit in the rack/case/wall until you need it or fancy trying it again - its still 'sat' doing nothing for weeks, maybe months etc. The only difference as I see it is that 1 may well be a high-end guitar in a Hard case so its a 'Case Queen' where as the rest are not.
I probably play my PRS 509 the least. I tend to think of it as my Super Strat and when I specifically want that 'SSS' configuration - which is not often. With all my others having HB's - from 'Vintage' inspired 58/15 LT's, the more 'Classic' HB of the 58/15 MT's, 'Modern' 85/15's to high output \m/ in the Cu24 Floyd, I don't tend to gravitate to the 509 when I want 'HB's' which I do 90% of the time. That's not to say the 509's HB's aren't good, in fact I often forget how 'good' they can be, its just that the others jump out more - want a LP or 335 like tone-594 or 594 HB, maybe the Special if you want a bit more push and both Cu24's have their distinct sound and flavour too so I don't gravitate as much as I 'could' towards my 509 so it does spend a lot of time in its case, not being played but I'd argue its 'not' a case queen because its there if/when I want to play it and its still an important part of my collection. Its not kept in its case to 'forget' about it and hopefully in time will be 'worth' more as an asset than as an instrument, its kept in its case to look after it so that when its 'needed', its in the best, loved condition to be relied upon...