I just changed the title after JPArbiter's answer I looked a bit more at the "economics" behind the Banshees and found some rather strange things.
I looked at the numbers of regiments in 3025 in the LCAF, the DCMS, the AFFS, the CCAF, the FWLM, the TDF, the MAF, the AMC and the ComGuards, numbers provided in the House Books, the Periphery sourcebook and the ComStar sourcebook.
Then I converted these regiments into a number of 'Mechs and used the 3025-3050 Faction Assignment & Rarity Tables provided by Xotl on Battletech.com (
http://bg.battletech.com/forums/index.php/topic,1219.0.html) to estimate the number of Assault 'Mechs and then of Banshees.
As we know from TRO 3025 that roughly a third of the 5000 Banshees produced are still in the Inner Sphere, I made the reverse calculations and found a number of BattleMech regiments for the rest of the Inner Sphere, a number that is way too high (and I found the number of Lyran Banshees, way too low for a nation that is supposed to have several hundreds of them).
What do you think?