I'm going to skip irrational fears like exclusivity, no mods, no first person, etc. There's no chance in hell that Bethesda would consider such things.
It's not the things that would obviously lead to Bethesda making less money that you need to worry about, it's the things that they might think would lead to them making more. For instance, I wouldn't buy the game if:
- The amount of initial content was cut short so that Beth could charge us for DLC. I hate paying for an incomplete game, but this kind of thing happens all the time. If they released TESV with fewer guilds, etc, than Oblivion, then announced later that, "hey, you can still get just as much content, you just have to buy the DLC" that would be a big red flag for me.
- If the game incorporated more hand-holding to gain a wider audience. It's been happening for a while now, and it will probably continue to happen. It's hard to get specific on this, but there's an invisible line here, and if Bethesda crosses it, us hardcoe fans will leave (and just stick with modded MW and OB until something better comes along). TES fans want to feel lost in a foreign world. We want to feel that there is danger around every corner. If the game holds our hands so much that those feelings disappear, then there's no point.
And on a more personal note:
- If the game world becomes full of damage-sponge enemies when you are high level. I hate enemies like albino rad scorpions. By all means, make the enemies more dangerous. Make them faster. Make them deadlier. But for God's sake, don't make them damage sponges that simply take forever to kill. There's nothing FUN about tapping the attack button for fifteen minutes against some dumb-as-a-brick AI that just bum rushes you forever. That's not entertaining. A dangerous enemy encounter should feel suspenseful, it shouldn't feel like a chore. I should want to avoid enemies out of fear of the treat they pose, not because I see them and have the feeling "Oh God here we go again...".
Agreed.
On the first point I hate that about Dragon Age, as soon as I open my copy I get a little paper saying I can get 2 DLC for free and theres others I have to buy, they even have a downloadable party member.
On your second and third points, I hope Bethseda takes a few notes from the game Demons Souls in regards to giving the player a proper challenge. That game has proven that you don't need to waterdown your game to be critically acclaimed as well as be successful sell wise.
To add my own opinion I think I would be dissapointed if they made the main story revolve around Daedra again like they've done with oblivion,shivering isles, and the infernal city. I've been reading a Game of Thrones and it reminds so much of Morrowind in a way, I hope the next Elder Scrolls game has more emphasis on politics like Morrowind did. I also agree with the usual about Bethseda taking away factions,skills,having you join all the factions in a playthrough,etc.....