Well, I can't wait for getting LH! It really looks awesome (and the mountains seem vastly improved!).
The thing I like the most? Changes on heroes and leveling. No more having to have a tanky hero despite me wanting to play all mages. No more having to choose a hero I find ugly (yeah, I sometimes chose on aesthetic grounds: I hate Urxen)... But, above all: finally being able to make real choices when leveling up! Those are things I really, really love.
The new changes on the combat also look very nice. I think the fights are going to become much more interesting, and to require a lot of moving arround and changing positions. No more tanks holding all the ememies while archers kill! Hurray! That said, I wonder, will the AI be able to effectively use the abilities? Because if all weapons are going to have abilities, I don't know... I just remember spiders beguiling and webbing archers... 
Now, as for the Governor discussion, I really, really like that class. Most of the time, I build a great mage, one defender and all the rest of heroes as governors. When there were changes of requiring population to create pioners, it was even more important. And, as was already said, now that you can choose the abilities, governors are going to be even more important. However, I do agree that perhaps there should be a way to make governors more ·playable". As has been mentioned many times, their problem is that to get more abilities, you need them to be fighting, but to benefit really from all their abilities, you need them to be inside cities.
The idea that Frogboy mentions of making them kind of general-style hero, that improves the behaviour of the army he is with, could work very well along with the changes in unrest and the such being global. That way, the governor is a kind of general-senator. I am thinking of a Roman style of general, not only leading armies but also making sure the infraestructure worked, directing engineers arround... That would require, of course, to make the economical benefits a little smaller (I mean, a +2 growth and -15% unrest would be a bit BIG for being global!) but it would make it really attractive. And, after all, there are already many governor skills that work that way (loremaster and merchant, mainly), affecting not the city, but globaly. Mainly, I think that with such changes, the path of the governor would no longer be the kind of thing you give to secondary heroes, but an option even for the sovereign. Empereor Kavarox, for instance, strikes me as the kind of guy who would go governor...
Anyhow, I can't wait to get the LH... Keep up the good work!