I tried to play with the numbers for the Base Force Size Modifier, but I can't seem to get anything realistic in terms of a reasonable budget for anything at the size that Battleforce would require.
The example given on some of the BFSM of 5 with B tech would be the following: to convert 100 Warchest Points, you would multiply 100wp by the BFSM, multiplied again by the tech rating of B as 1.5, giving you 750 Support Points to play with. 750sp translate to 7,500,000 C-bills.
It's just not enough if you follow the base steps for a larger force of say a Battalion. 36 divided by 4 (inner sphere) would give you a BFSM of 9. 9x100wp=900sp/9,000,000 C-bills. At best, with D tech rating, you would get 90 million for the full warchest conversion. Not enough for even 2 Medium Mech companies. You can forget about Dropship squadrons to taxi stuff around with things this tight.
Again, for a Regiment of about 106 units divided by the 4 for the Inner Sphere organizational Lance composition would give you a BFSM of 27. Netting you about 27,000,000 for the conversion of each 100. 270,000,000 for the whole warchest amount. I'm not about to figure that one just yet.
Needless to say, I was wondering if multiplying the final conversion by the same factor of most Battleforce conversions of x3, would bring it to a working budget. So, back to the Battalion level. Multiplying the 9m per 100 points conversion by three times would leave you with 27m -- or about 270 million all together for the full 1000 Warchest reserve point total. I think this is manageable, but I would like anyone else to run the numbers and see if a campaign based on C-bills would work in BF with this tweek. There is a Faction Specific rundown of mech list file out there that has all the Cbill costs that may help shave time from having to MUL or Record Sheet hunt each entry.