I'm not sure what is more confusing the question or the answer....
Sorry, but I'm trying to get my head 'round the situation; your wife is Romanian on a temp L permit... You were married in Spain and you have a 5 year Visa for there ( not that makes ANY difference here in SWITZERLAND, not SWISS, as a non EU country ) and you are wondering if you move here to one of the most un-PC places on God's green earth if you will get an instantaneous B from being married to a Romanian.... well, I'd be afraid to say, on first read, unless you are a diplomat or seriously in demand in a specialist field you have two hopes...bob and none

You might get issued an L on the same terms as your wife but certainly no more unless you take over the employment reigns and criteria.
Sorry to be perhaps a little negative in my answer I am by no means an expert in this field like other members such as Shorack Mk2 but people here would definitely need more details to make a more informed response.
Best,
David.