I voted yes with caveats and this is pretty much how I see the game overall. Until mods/DLC comeout, your sandbox RPing is pretty much limited to these 4 factions +/- the "good" ending. I suspect Beth may have deliberately? shipped the game in this state with the intention of adding to it in form of future DLC. I'm wondering how much this will add in terms of value to the game. Because IMO Fallout 4 seems way more limited in it's sandbox capabilities than Skyrim (or any prior TES game). Even if modders come up with an alternate start mod (similar to Skyrim's Live Another Life), the game mechanics are still limited to these 4 vanilla factions.
In contrast, Skyrim had over a dozen distinct and unique factions with side quests that had NOTHING to do with the MQ. FO3 and NV seemed to have better variety. But that was AFTER all the official DLC came out for both games AND the modding community added content like TTW, Project Brazil, tons of quest mods on Nexus/Steam etc. etc.
I think this poll is a bit premature at this point. No DLC or modding tools are available yet. Revisiting this around late Spring of next year would make for a far more interesting and accurate polling. Because all we have to go on at this point is sheer rumor and speculation.