So, no I don't expect the MP game to be much as far as the Empire building game goes. I've seen the MP elements and they are arena battles and some small capture the flag like pvp mp games.
I don't mean to offend, but I don't think you fully understand what Elemental's multiplayer is supposed to be. Yes, it will supposedly include some odd variations like arena mode, but it will also support the same epic empire-building game you enjoy in singleplayer, with up to 16 players online. This may not be important to you, which is O.K., but it's important to the guys making Elemental - they do consider large-scale multiplayer one of their "must-have" features, this is not Galactic Civilizations 3-with-magic.
All that aside, singleplayer/multiplayer is completely irrelevant to the balanced-starting-position discussion that spawned it (alas, internet forums..). Good game balance may be more obvious and important in multiplayer, but it's hardly a bad thing for singleplayer - this is not a case of 'sacrificing' the singleplayer experience for multiplayer, it's just a good idea that helps the experience whichever mode you're playing.
For example Civ4 does this, starting positions are "sweetened" (have extra resources added, more for worse positions) so every player gets a carefully balanced spot for their first city. One can hardly claim that Civ4's singleplayer was sacrificed for multiplayer based on that, it's still very much a singleplayer-focused game just as Elemental certainly will be; balancing starting positions is simply good game design (which happens to be more important to the multiplayer crowd, but is still a very good thing for singleplayer).