Air Hammer, Torca, Noctorro, Sky Shadow and Terragator. In one of my stories, a BW one, Air Hammer and Sky Shadow get into a close-combat situation and SS is winning, by constricting AH's throat with his pincers. I liked that bit. Noctorro saved AH, though, by emitting a strange, piercing sound.
The Transmetal forms of Airazor, Tigatron, Rhinox (he looked cool in his Armada cameo), Dinobot, Scorponok, Terrorsaur and Waspinator. I liked 'em.
Jawbreaker! He's amazing! I tend to like Frostbite better, though.. his colors are cool.. arctic. Jawie's profile makes him sound like a Maximal version of a non-psychotic war-machine Rampage.
Antagony. A fortune-teller Pred sounds cool. Her own agenda.. and she's a femme, too. Though I don't like her looks, her character is good.
Um, and if you wanna see Claw Jaw, then try to find Beast Wars 2. Scuba is the same character. But, well, I woulda wanted to see Scuba turn into the Transmetal Claw Jaw... that one's cool, though I like the original better. Eeeeeeeeewwwww... the Transmetal colors don't match!
Grimlock. Some interesting conflicts there, with his old self and the BW self thinking which was better.. being an Autobot under Prime's command, or a Maximal under Primal's command? And he has some battle experience, too, cuz he's the same Grimlock from G1. I wouldn't be surprised if he'd end up being 'the Kup' of the Maximals, a more aggressive version of him, that is.
Wolfang woulda been cool. A wolf Maximal. Eeeeeee..... ^________^ Me love wolfies! *he he*
Lazorbeak and Fractyl. Could be Terrorsaur's brothers or cousins. There being three of 'em, could mean they're the sorta incarnations of the original G1 Seekers, Starscream, Skywarp and Thundercracker. Of course, there could not be an incarnation of Screamer because his ghost lives on (if a ghost can live...). Terrorsaur being Screamer, Fractyl being TC and Lazorbeak being Warp. Cool idea, eh?
Magnaboss. HEY! He coulda been the counter force to the Tripredacus Council, a Maximal version of them! What if the original BW Maximal Council were the three of them? Prowl, Ironhide and Silverbolt?
Nightglider. He looks wonderful, and of course he and Rattrap would have debates over which one is the better spy. Rattrap being not-so-keen on going out there and fight, and Nightglider fighting because of his devotion, it is a nice contrast.
Ramulus. His survival story brings some nice drama into the BW continuity. Reminds me a lot of Beast Wars Neo Rockbuster for some reason.
Polar Claw. Because he's a ballistic bear. And the Maximals really need a polar operative if and when the Vok decide to abduct Tigatron.
Razorbeast. Sounds like a Maximal version of Scorponok.. a more intelligent version of him, that is.
Scarem. A new Rampage to deal with. It's not a good day for the Maximals.
Scourge. Looks cool. And his profile indicates that we have another Tarantulas within the Preds.
Shokaract. You thought I was gonna leave HIM out? The ubercool crab with Unicron's chaos powers? Ooooohh noooo...
Snapper. I like marine animals. And besides, if the Maximals have a group of water-based Maximals (DC, CS, AH, Torca), then why not have a Pred group consisting of Rampage, Snapper, Shokaract and others?
And btw, if you wanna see Snarl, see BW2. He's known as Tasmanian Kid there, and is quite a prominent character. And I love his character, too. He's funny in the show, but not-funny (and quite serious) in the movie.
Sonar. It would be so cool to see how an experiment of Megatron has turned on him! Wooooooo, that's one BIG conflict!
Stinkbomb. It would be good to have a stinking Maximal without having to resort to such methods as with Rhinox and his problems....
And btw, I LOVE Stinky's looks. Hypnotic light from his optics? Cool. And the odor getting off only if the victim bathes in tomato juice...? Where'd that one come from? 
And where the heck would they find tomatoes on prehistoric Earth?Shadow Panther A.K.A. Tripredacus Agent. Could be a pal of Ravage's, helping him while acting under special orders that Ravage doesn't know about. Sounds like another cool conflict. And turns Transmetal 2 along with Cheetor, because he is... dun dun duuuuunnnn... his twin brother! And Cheetor has never forgiven him for turning a Pred. Or something. Or if he is the BW Ravage, then he could be a Vok agent, acting as a pal of Tigerhawk's.
Windrazor. Now there's a really cool background. A binary-Spark system... WHOA.... sounds really good. And he could have been Silverbolt's little brother while being himself, and not the binary-Spark bot. Right?