I hope these will be in scale with the other WST's.
The Dinobots were made in scale to the other WSTs based on their size in the cartoon so they probably will be. So Wheeljack will probably be the same size as Prowl and Jazz and Blaster the size of Soundwave.
Will probably get each of these.
Someone mentions Contructicons, they already exist as (unofficial) WST's, along with the Aerialbots, Combaticons, Protectobots, Stunticons and Fortress Maximus.
These are not of the Justitoys quality but Devastator is great, Superion is good as well except that the smaller Aerialbots can't move their arms foward.
Bruticus has wrong colors and Onslaught can't move his arms foward.
With Defensor you can't put First Aid in the place he is supposed to be (left arm) so you have to switch him with Groove or Streetwise, Hotspot has the wrong color and can't move his arms foward.
Menasor is the worst of these series as he has Technobots Nosecone and Afterburner instead of Wildrider and Dead End and Dragstrip can't be used in the place he is supposed to be (an arm).
Fortress Maximus is good though. Justitoys could do a Scorponok of similar size to oppose it.
The Predacons would be a great idea though, then they would also have to do a Sky Lynx to oppose it.
But my nr.1 favorite to have as WST would be Omega Supreme.
I would also like weapon sets for the Autobots. All autobots have no weapons except for Optimus, Ultra Magnus and Hot Rod. I gave 1 of Hot Rod's weapons to Jazz (which fits in his hand) and have an additional Optimus Prime and also two custom G2 Optimus Prime's just for the weapons (gave Optimus guns to Prowl and Bluestreak and used 2 the missile launchers as shoulder launchers (with some tape) for Sideswipe and Red Alert). But having accurate weapons for them would be better.
But as for more normal sized Autobots how about
:
Sunstreaker (we have Sideswipe so should have his brother too

)
Hound
Tracks
Warpath
Ironhide / Ratchet (cartoon accurate, so with a normal head)
Powerglide
Seaspray
Cosmos
Skyfire (cartoon accurate)
Inferno / Grapple
Trailbreaker / Hoist
I would also like a Smokescreen but that could simply be a repaint of Prowl or Bluestreak. Considering how many Decepticon jet repaints there are on Ebay I am surpriced that there aren't any Prowls (Bluestreak is rare) converted into Smokescreens for sale.
As for Decepticons I would say:
Blitzwing (but triple changers might be to difficult at this size)
Astrotrain (but triple changers might be to difficult at this size)
Insecticons (Shrapnel, Bombshell, Kickback)
Soundwave cassette pack (Buzzsaw, Laserbeak, Rumble, Frenzy and maybe Ratbat, Slugfest and Overkill)
Season 3 characters:
Predacons (razorclaw, Divebomb, Headstrong, Tantrum, Rampage)
Sky Lynx
Ultra Magnus trailer
Galvatron
Kup
Blurr
Cyclonus
Scourge (and you could get 5 more to be the Sweeps

)
Blaster cassette pack (Rewind, Eject, Ramhorn, Steeljaw)
Springer (won't be to difficult I think because his car mode is very similar to his helicopter mode)
Arcee
Octane (but might be to difficult at this size)
One of my favorite season 3 characters is Broadside (the toy is bad but I like the character in the cartoon) but I put a G1 Broadside with my WST's, this fits very well as he is big in the cartoon.