Hello all, all of these suggestions will be based on the lore of WARHAMMER i hope that they will get to the ears of developers and will help the game to become even better.
To begin with all Beastmen and Greenskins starting positions which are wrong according to the lore.
Khazrak the One-Eye must swapping sides with Morghur the Shadowgave Khazrak must start in Nordland in war with his old enemy Boris Todbringer, Morghur the Shadowgave must start in Forest of Arden near Artois and Malagor the Dark Omen must start in Great Forest near (mourkain probably). Also the Beastmen will need a lot of changes not only in campaign. For beginning will be nice Beastmen to have better raid stance like that of Norsca which to decrease the upkeep of the units during the raid and also to be added available march stance to them.
The starting position of Azhag the Slaughterer must be in Troll Country as a horde with main goal and quests in the south. The starting position of Grimgor Ironhide must be in Peak Pass near Karak Kadrin in Gnashrak's lair. The starting position of Wurrzag Da Great Green Prophet must be in Southlands near (the cursed jungle probably) as a horde with main goal and quests in the north to unite all the Greenskins. As a whole Greenskins must be with more horde oriented play style that fits more to the lore. The starting position of Skarsnik must be more closer to Karak Eight Peaks somewhere in Badlands.
Belegar Ironhammer and Queek Headtaker also must be more closer to Karak Eight Peaks. In the lore Karak Eight Peaks are the biggest under city of all cities with many levels in him it is better Karak Eight Peaks to become a separate province city with eight levels(settlements stitched together which can be reached only by entering in the upper one from the surface or reached by the next one settlement stitched to the settlement occupied by you). Some of the levels can be ruins some occupied by greenskins some of dwarfs or skavens. In these 3 campaigns the main goal are to have all levels of Karak Eight Peaks which will provide you the bonuses and will remove the negatives, let the battle for Karak Eight Peaks begin.
Troll Country needs a lot of changes first of all Throgg King of the Trolls must start in the northern part of the Troll Country near the mountains with his lair of the Troll King, a little more snowy looking land and to be added one norscan settlement on the coast. Also all kislevite settlements need to be moved a little bit in south.
Heinrich Kemmler starting position must be in the Vaults in the place of the starting position of Belegar Ironhammer, at least in the lore he aweakens KRELL there and make a pact with the chaos gods to retake his power again.
If in the future Araby is added Arkhan the Black may start from his tower near the black pyramid of Nagash. And Tiktaq'to may start in Macu Peaks near Hexoatl and with alliance with Lord Mazdamundi and in war with Blue Viper Savage Orcs.
Also i think that the Cylostra Direfin will fit more somewhere much more in north in the Clawed coast maybe, with starting position in the twisted glade.
P.S.If i missed something feel free to tell me, the post will be edited periodically when better ideas which fits the lore are suggested.