1) OK i agree it could be done, but i dont think developers will make it that way

2) What if game industry do same thing to KB series as it happened to HoMM serial?

They made 5th and 6th hoping to attract players with nice graphic and totally missed gameplay and story like in HoMM3
3) I`m always open for new ideas and then think would i like to have it in game or not, i never drop it even before thinking.
5) I`m not saying only Red sands mod was good, many other mods had great ideas, and dont by players simply because they wanted to make something of their own for this game.
for the Legend check HoMM-babies mod, Matt did great job with it,
in AP mods Csimbi had nice idea for Extended skills (it would be great for warrior to have mirht skill tree up to 5th lvl, paladin mind 5th lvl, mage magic skills up to 5th lvl, to make little difference in classes),
for CW adventure mod, equilibrium mod, red sands +extreme mod, Mytic also had great idea for making available critical hit for special unit abilities but i think he never published it

also ShadowTek`s anti paladin mod great ideas, never got published

But nevertheless many interesting ideas in all of those mods.
6) Every 10-20 battles you can build something in YOUR castle, hm nice . That would be OK