out of curiosity, what "tilting" hardware do you have in mind? it's been a really long time since I had SL3s (my first MLs ) so don't remember how much tilted towards the back they were, but my Odyssey and Ascents' panels are fairly vertical from the get go and there is some additional room to maneuver around that with the spikes. I've noticed that the newer breed of MLs have their panels more "laid back" indeed.
This isn't a problem with the older ML speakers, whose panels were generally vertical. Only with the newer "WAF" designed MLs starting with the Summit generation. ML has made their speakers smaller, narrower, lighter, and more esthetically pleasing, to the detriment of sound quality in my opinion. Fortunately, they have made some improvements in crossover and woofer box design that helped in sound quality, so perhaps it is a wash in the end. I still think the Prodigies blow away the Summits in certain respects. And I do love my Summits. But still . . .