Okay, Opinion Time after first read-through:
FLE-14 Flea: YESS! This is the original old Flea from BattleTechnology (with corrected armor, as the original one had too many armor points allocated). Very very glad to see another BattleTech unit back in canon, and another ultralight at that. They may be largely irrelevant on the gameboard, but for fluff lovers like me this is pure gold! Thanks CGL! O0
(I note, somewhat belatedly, that the laser was moved from the torso to the arm. Why?)
WSP-2A-X Super Wasp: Umm... wrong. Feels wrong. I want that glorious 8/12/6 Wasp from TotBW back! See, this design isn't bad, it's even interesting. Kudos to the author for coming up with the supercharger idea. But... this is a total retcon from the earlier stats. The "original" Super Wasp was almost legit - all it lacked was Endo Steel. Couldn't we just get one hand-built sample of Endo Steel to save the original design? Would have been a minimal change, and I had high hopes to see that 'Mech resurface at some point in the future. :'(
GRF-2N-X Super Griffin: Perfect. The original specs were made under Battledroids rules and a total trainwreck. Prototype IJJs do the trick, and the queer (illegal) armor allocation was also fixed. They did everything right here!
CTF-0X Cataphract: Nice idea. But OOC it's interesting to see how the Raven's ECM evolves from a standoff artillery spotting/identification device, to be used from the rear and deployed on the battalion level, to a generic ECM testbed, to in-your-face electronics that never made sense to mount on a light 'Mech in the first place. There's a creeping retcon going on here, but looking at today's stats for the EW Equipment this Cataphract is exactly what the CapCon should have built.
(Oh, and when you look at ye olde BattleTechnology magazine, early photos of the Cataphract make it look like a mutated Ost-Mech. That's another aspect that was gradually retconned away.)
Btw, in case you wondered what happened with the 'Mechs: Even in the 4th SW the EW Equipment was in its prototype stages and not ready for deployment yet. We have a canonical example of a Raven being lost because the EW Equipment, when turned on, simply fried the pilot's brain (BattleCorps story Salvage). No wonder those CTFs weren't heard from again.
MAD-4X Marauder: I like LOVE Blazers. But let's just say the MAD isn't the chassis where I'd put them. SRMs on a MAD also feel odd. This one definitely is a queer design, but it'd be interesting to see how it performs on the gameboard.
ZEU-6Y Zeus: Heh. Like who we're told here that ComStar lied and Blazer-wielding Zeus's actually entered line service, though they were largely overlooked.
K-3N-KRHQ Kiso: Odd critter. Talk about fielding a gun turret in a pickup game - at 2/3 movement, it's a stillborn design. I'm not touching this thing. Ever. Nor can I see it working as a "mobile" HQ. Foot infantry can run this thing down. The fluff doesn't make much sense when you consider the speed. No sane person would put a command staff on this vehicle.
J. Edgar - Squee! Fuel cells in the Succession Wars era! Mentioned only to be killed again though.
Kestrel - Never liked VTOLs, they don't usually make for funny BT games. This particular one gives me the shrugs. I guess it's interesting if you care for Wolf's Dragoons.
Condor - hobbled with a fission engine. This one has character. ;D Good old days of Capellan gross incompetence.
Buffalo drone - don't know what to say. Hi.
Şoarece - Another 2/3 mover. Hello, my name is Target. This one has a continuity error in its fluff, the Romanian-speaking techs. According to a sidebar in the old Marik Housebook (p. 10), Romanian was a dead language, lost as a living tongue by ca. 2370 - five hundred years before this tank was designed and named.
Starfire - Not terribly impressed.
Tsuru - nice to have as a fluff/background craft. Could make an appearance as a scenario objective. Unfortunately, it's fluff marks it as a pretty recent design, limiting its usefulness for earlier Succession Wars scenarios. But it can be used as a generic template.
Edit: FLE-14, not FLE-4. Typo corrected.