I don't have strange ideas, just scientifically proven and good budget advice from years of hifi ownership. To dispute it's you who need to look at why you respond so strangely.
If you take the woofer which puts out the most waves away from the room boundaries you will decrease room boundary amplification and as such, inverting a speaker so the tweeter is on the floor and woofer is further away will get rid of some booming. End of story, it's physics and also actually works in the real world. That said, you shouldnt really put a bookshelf speaker on the floor, but means must. And if anyone was reading and thinking of inverting floorstanders, then it's just amusing. Perhaps people want more bass and as such, stick the speaker in the corner, get 3 boundaries +9db in theory. My calibrated mics are in storage so I can't try but seem to think you get just over half of what theory says.
So glad you agree to putting a paving slab under a speaker then whether on stands or not, add this to your advice. Seems you just don't agree what is important to clean up. Midrange and treble if you ask me, NOT bass which doesn't have spatial info below 100hz or so. The main issues are isolation, coupling, resonances. So slab is good whatever you think. Mind you, my main speakers are 50kg each, so they don't need.
Yeah, I was surprised about recent interconnect purchases as well. I've got and tried many thousands of pounds of interconnects in my time. Currently mine are in the region of £300-£500 each, speaker cables run at another £2-3k. Although currently living with one of my spare systems (cables worth many times the equipment). If you have a budget system with expensive interconnects, try some cheap ebay ones and be shocked. Are the chinese dumping on the EU or something? Discussions here are also about systems <£1000 or so, so I took into consideration.
Power cables, I'm open to discussion here, depends if you got a really ****ty one/plug in the first place. If you do, get a decent plug and nice thick cable and should be OK. Only started to look into it after spending £2k on power in the car (flat out sq system will suck 400A!).
UK power is the problem TBH - Russian sounds much better! Interesting how they changed the voltage from 240-230 a while back for all the valve people out there. Not measured myself, just read it's supposed to be european power now and there are tolerances etc.. Prefer class A myself. Although valves work well in DACs but then so do batteries - see hifimediy page again.
For £10 the eltax were very good. Heard wharfedale diamonds / JPW etc sound no better for 10 times the price. Yeah they are coloured and no detail but so are most bookshelfs under £200. Especially anything recommended by what hifi.
PM me if anyone needs to publicly argue their beliefs further and we can chat.