In block 1/2 usually at least a few triggers are running on ship 1 at any given time. I've never had a hard time finding a cradle trigger to run. Cradle is bringing in far more raw meseta to the game then Inferno ever will. (I have no idea about Drawn to Darkness, it seems to produce far less ex-cubes then cradle)
The units might not be tradable, but the affixes can be used to craft other affixes, or be transferred over to tradable units(with the exception of Glare catalyst, which can't be transferred over.)
I still honestly believe the appeal to cradle though is by far the +4mil (Sometimes 12mil) meseta per run, although I have no doubt that boost week made cradle way more popular (although I feel it's not going to lose traction.)
My main hate towards cradle is the fact that it's sucking in the entire playerbase because no one wants to run other content. Why TPD? I've done more runs then I can count and I've gotten 1 unit total.. OR .. I can run cradle, get meseta, and buy the parts for the units. No luck, no bullcrap, just time for upgrades. Even when I first tried Inferno I was like "Cradle drops SDB, so even though this quest drops SDB, this is just a worse cradle."
In all honesty, if they removed the PSE bursts, it would probably even out with other content. I like that Cradle offers end game affixes easier, because it means more people can get upgrades without getting frustrated, but that's not what it is, it offers everything, and no other content matters anymore (Except for medals in NA for some reason.) So now PSO2 is "Get to 85/85, then spam cradle. F everything else."
Even with Inferno, if it is better then cradle (I don't believe it is), it's limited. Cradle has triggers going 24/7, and is a constant pump of meseta.
It's not even 9am, and cradle still has trains going..
IF Cradle was limited, this wouldn't be an issue, it's clearly not.
Blame SEGA and their overuse of Primordial Darkness lately. When the opportunity to do something else that is way more worthwhile rose up we took it and I would appreciate if they would stop nerfing Cradle since especially in the JP server there is no more free shop pass and I am not going to rip my hair out spending a week doing weeklies on 26 different characters to even get a somewhat workable income. Yes the market has issues but most of those issues stem from the age on the JP server as for the Global server the issues started even before Cradle with me looking at stuff I wanted for example the Arkuma Charm Base was over 40 million last I checked which I cannot afford on Global without the Cradle of Darkness UQ being there. I don't see why people are even complaining about this don't you want more meseta?