... Scotty is right as he has mentioned the same or similar ideas elsewhere.
How many threads do we see on what 'mechs would be good for "this lance"? How many posts on social media? How many times do we see someone asking how to divide the 'mechs of the box set into lances?
See also Stars and Level IIs.
These are all great questions, but without guidance or context what does it even matter?
In many respects, it may not matter. If you generally play with an ongoing story campaign or are a GM, then your goal is different. If you are just wanting to paint your miniatures in whichever way, it may not matter because you can mix & match later. But what if you want to have a selection of lances that you can just pick up and take to a game? General use lances, special purpose lances, etc? How do you make it consistent so that someone isn't taking a medium-light lance and the other is loading up with assaults? Because you can ask for what units work well within a lance and what that fourth member should be, but if you can't field them in a game because of BV imbalances it doesn't matter. And if you really want to have that lance of matching 'mechs, then you got to have something to work with.
I never see anyone talking about BV when forming these units. It seems people tend to focus what are "the best" designs rather than putting together a functional force that you know is balanced. And that just makes it hard. We have no form of guidance in getting there, which leaves new players befuddled. Why are we not setting up a standard of making forces with certain BV ranges?
4k, 5k, 6k, etc?
For example, you make a lance with your fast scout, two mediums, and a heavy. One unit may be for fire support, another for close range. You've made a balanced force. And all this information is present on the record sheets -- you don't necessarily need to go to the MUL to find it (although why the multipliers for skills aren't included in the BMM I'll never know).
Want to have three good 'mechs, but are running short on BV and don't want to downgrade pilots? This is where you take that 'mech that isn't that great. You put that Vulcan or Hermes II in your force to make room for the Marauder.
That seems obvious, doesn't it? Why should your force be 5340 BV because you picked four Thunderbolts and now on the fly your opponent has to try and match that? But for 5k BV you can take three Thunderbolts and a Jagermech if you just absolutely have to have Thuds.
I think if BattleTech is going to expand beyond a small circle of people playing the game at their friend's house, then having a framework for force creation is the way to go. I don't think it damages creativity because you have so much to choose from, but it does force innovation on the player's part. And it makes a lot of the pre-planning easier, allowing for pick-up games. AND it helps move those players from beginners to intermediate players.
I totally understand if people just want to put whatever 'mechs together to form their lance. But let's be honest: all those "merc" lances showing up on Facebook, reddit, and here on the boards are likely not being used. I really do think it is time for CGL or the community to put together a basic framework on force building -- SINCE EVERY OTHER GAME DOES THIS.
As we enter a post-pandemic world and as BattleTech picks up in popularity, this to me seems the easiest way to make the game more accessible to players and grow the community by facilitating interactions. As I said before, I realize it isn't for everyone, but standard BV games can become our lingua franca.