As more military defect the FSA will slowly but surely become more proficient in the use of the weapons they have...organising them into a cohesive force would surely take many months of training, even presuming the defectors are of sufficient experience.

It all depends on who defects really it might be the most poorly disciplined solider who dislikes taking orders and wants to get back at his commanders until the danger arrives and he splits or hides.:yep:

They will just keep slogging it out but the Syrian government has an air force and tanks which the rebels lack and they also have much better access to weapons and ammo as supplies dwindle the rebels will become less willing to fight.

There is also the possibility that weapons support will increase as anti Assad countries increase their support for the FSA.

I'm wondering just how high morale is amongst his front line units after being ordered to fight and kill their own countrymen for so long.

Well one can always try to hire as many sociopaths as possible some enjoy the power that a certain type of government might give them I am sure that many Gestapo men where not really Nazis but they enjoyed the powers that the Nazi party gave them.

Also in Syria you have many different factions that do not see eye to eye I think that more might choose Assad or the FSA if one side or the other showed favor or threat to their interests.

Hard to say really I think that many of these countries (ME ones) aren't really getting that heavily involved because they may actually prefer Assad to whom ever might take over from him if the FSA where to win so they sit and wait to see what comes along.

They may not always like Assad but they also fear a replacement that might challenge status quo so unless they can be sure that their man gets in they might stay mostly on the sidelines.

Exactly, Syria can be seen demographically as a mirror image of Iraq.