'Been hearing a lot on the forums lately from people who say that C-Bills are not a good limiting factor in the game, as they are too easy to earn from the mid-game onwards, and that got me thinking.
In other 'mech games (such as MW4) you scored more points if you were against a heavier opponent (therefore a 40ton mech damaging another 40ton 'mech could earn 5,000 points, the same 40ton 'mech damaging a 100ton 'mech could earn 12,000 points.
There should also be a second modifier added to this where you gain more C-Bills for killing a higher ranked opponent than yourself, but earn next to nothing if, for example, your a Khan killing a Cadet.
So we'd have less money per point of damage the higher you rank up (unless your always facing somebody higher ranked than you), and that's fair as you can be packing 2-3 times the firepower of the lighter machines of the lower ranks. You'd still earn some cash and get a kill on the scoreboard, but if you wanted to keep up the fast ranking pace you'd have to hunt heavier prey.
Overall both these modifiers should make earning money just as hard in the middle-endgame (where you get all the massive firepower machines that swim in cash after a few alphas in 0.3) as it is during the early game (where everyone struggles to rank and earn at a relatively slow pace).
Plus, those late game joining Cadets, with their light 'mechs would be a worthless annoyance rather than 25K+ of free money, to the late game GC-Khan 75ton+squads.
So with a slight global reduction to cash reward per damage point, with added modifiers for weight and rank and it could be a lot harder to stockpile massive amounts of cash from the mid-game onwards.
1 more thing, BA earnings would have to be free from the tonnage modifier, only having their cash rewards based on Rank, in fact BA should be earning far less per point of damage, as right now 3-4 BA can hand you 250k within 3 minutes under the right circumstances (a CSJ BA Squad did exactly that with me on Marshes yesterday, I went from Owens B to Mad Cat within the first 4 minutes) it's ridiculous that BA should make that much money in that timeframe, 4 'mechs would have earned <100K between them for killing the same number of light 'mechs.
Rewards for killing BA would also be free of the tonnage modifier, and increased per point of damage generally, but also based on what weapons the BA has in it's arsenal.