The MUL is an amazing resource for prepping for Alpha Strike games. Depending on how you want to organise them, it's trivially simple to see lists for 'Mechs, vehicles, infantry, ASF, etc etc for a given faction at a given period. You can go window-shopping, or (like me) scan the minis you have to see a force you can start building with. Helps having the formation guidelines written down handy - eg if you want a Pursuit lance, you need X Y and Z, and so on.
Getting deeper, you can go looking for "What's available to Mercs in FCCW period with IT8" (eg. carries two squads of BA), or "has IF4" (lots of indirect fire), and so on and so on. Friend of mine went looking for designs that jump farther than usual (JMPS1) in order to buy minis from IWM.
Ghu has blessed the MUL, and honour to the MUL team!
