I'd rather they dropped the partially open world approach if it can't be done right.
Mmm. So would that mean dropping hub locations? And what about the player's ship itself, which I'm sure will have plenty of crewmembers?
Honestly, I'm not even sure what you mean by 'partial open world approach.' Is that anything other than a linear game?
Nothing in ME has ever been open world.
What we saw in DA:I was a partially open world and they didn't get it right. Making the maps bigger doesn't change that you still have to zone between maps and the occasional patrol and wildly respawning wildlife (bears!) don't make the environment any more interactive.
To quote wikipedia:
Open world is a term for video games where a player can move freely through a virtual world and is given considerable freedom in choosing how or when to approach objectives, as opposed to other computer games that have a more linear structure. Open world and free-roaming suggest the absence of artificial barriers, in contrast to the invisible walls and loading screens that are common in linear level designs. Generally open world games still enforce many restrictions in the game environment, either because of absolute technical limitations or in-game limitations (such as locked areas) imposed by a game's linearity. Examples of high level of autonomy in computer games can be found in MMORPG or in other games adhering to the "Open world concept". Their main appeal is they provide a simulated reality and allow players to develop their character and its behavior in the direction of their choosing. In these cases, there is often no concrete goal or end to the game. There are limitations to this autonomy through the rules of the simulation and its limitations. But the direction of gameplay may or may not rely ultimately upon the decision of the player, as in some cases this can be completely controllable by the player, the type depends on the requirements and availabilities of the game.
Nothing of that applies to ME or DA.