That's how it seems to me, at least.
Honestly? What it seemed like to me was they had this idea . . . and then rubber hit the road when the game got into the testing phase. To put it into Mitch terms: It wasn't fun. And if it wasn't fun and engaging to play, then it wasn't going to garner the sales they were looking for.
That's with regards to toning down how punishing it "could have been". For the tech making it in? I've got several ideas of why but I think they're all possibly correct to some degree, and it comes down to the numerous repeated complaints about the DLC lacking "substance". So they scrambled to get something - anything - they could throw in. Which is how the LB-X and Ultra autocannons ... despite not really fitting ... make it in. Because the previous two DLCs were getting fire for not having enough to feel they were worth the value. (I disagree in both cases, but that's a discussion for another time and thread.)
Now as to the reply to me:
And this brings be full circle to the original question. There are many eras and regions available in battletech Cannon. If you want super customizable assault Mechs with clan tech, why not set the game in the FRR in 3050? Or if you want the game the way It was pre heavy metal, why not set it in FedCom space during the 4th succession war? Given the variety of options in setting, why choose one that doesn’t match the vision of the game?
The 'Mechs are not "super customizable", by a long shot. They're still quite constrained within some roles, and the sad truth is the best/worst have been pegged to be ones which were already "pretty bad" designs in the first place or ones which were known to be "useful". Also, I feel the need to point out - even Clan Omnis aren't quite ... simple ... to work with unless one ignores a good deal of issues which start looming thanks to Clans not understanding things such as "logistics" and "supply lines". But that's also another time, thread, and argument entirely.
But I'll point upwards to the key answer - because people want to tinker with their 'Mechs regardless of what canon says should be possible. That's really the long and short of it. It's expected. So to leave it out would be what some might call a Bad Idea.