Since TRO Golden Century and TRO Irregulars have had sheets with them, i wonder if that is the plan for future TROs. This would mean massive 3039-sized TROs probably aren't feasible as required sheets would push them too big.
The era-compilation TROs don't have sheets though, then again they are redux products with sheets elsewhere.
I do wonder if pure RS products are poor sellers. I mean, there's some we never got...
Did some number crunching and yikes, those record sheets. Through v22 we're at 220 pages of standard readout content and 535 record sheets (not including the two missing Stinger C boys). There has been an average of 24 sheets per volume so the total page count (excluding the three page boiler plate cover and credits pages) should top out around 825-840 pages. Two volumes seems a bit out of reach if 100% of the RS are included. Alternatively, if zero RS were inserted it would fit pretty neatly into one volume. With all of the RS already created I might suggest concurrently releasing a PDF RS volume.
Even if you cut RS, that would mean nearly 250 page TRO, TRO3050U-size. I'm thinking maybe that's too big. RS compilation itself would be very big.
For contrast, IlClan, Battle of Tukayyid are both about 200 pages. TRO Irregulars and Golden Century are around 150 pages each. BattleMech Manual is 150 pages.
Granted, Campaign Ops new edition and halved TacOps are over 200 pages each but as full-rulebooks, they're special cases.
Either way, i'm pretty sure Cubby and Adrian have noted a RecGuide compilation won't have everything.
Logically making it about the new 'Mechs only would be the simplest solution. That's 24 'Mechs, and say 4 RS per 'Mech on average, for total of 150ish pages.