Okay, so I've been generally enjoying FE:LH, but here's a few things I've noticed.

First of all, the thing that has annoyed me the most, is this crackling kind of click (sort of like the pop you get when you connect your PA into any audio interface that is sending amplified signal into them or when the PA themselves are amplified). It's happening on random intervals, sometimes multiple times per minute and sometimes just once in few minutes. This shouldn't be a driver issue as I have them updated (Though I haven't tried using asio4all driver yet and would rather avoid using it if possible, currently using M-Audio FastTrack II drivers)  More interestingly, when I minimize Fallen Enchantress client, while the audio drops out, the clicks still are there and only fade away when I completely shut down the client. 

I'll update later on some more info about the audio problem. Looks like it's happening only on the right channel. And I think it's frequency is increased during tactical combat activity, but even then there's no pattern (like clicking or moving mouse, it just happens randomly or very, very arbitrarily).

Another issue I noticed is that sometimes it seems that the stuff like Shards, Horses etc. the 'Build' option (at least, not sure about 'Upgrade' option) doesn't always show up in the capital city 'Build' menu. I can build them normally by clicking on the object in the map and selecting the option from there, though. And yet, sometimes they show up right away in the menu when the area of influence expands to them. Also, if I remember correctly, reloading the game also fixes it and everything shows up correctly.  

And I have also lost (?) a hero in a strange manner. I acquired the hero by defeating him in a duel originally. Then he died at one point and he got sort of 'stuck' inside nearby city. He was on zero health there and nothing happened during the turns. I couldn't move him, but his icon was clickable in the city. I could even select him just like the other heroes, but when I relocated the other heroes, he stayed there. Once I reloaded the game from autosave, that hero disappeared completely (checked all cities). I'm assuming that he shouldn't have disappeared completely, right?

Then another, rather strange issue. I captured a city from Wildlings, namely Deorcnysse. It was lvl18. So what happened next was that I couldn't end my turn. Clicking the icon did nothing at all. This was resolved by reloading the game, though. Then it worked like a charm again. However, I did get to try it twice. On both times, if I captured it AFTER reloading, the bug appeared. If I captured it BEFORE reloading, then everything was normal again.

Okay, I guess these are the bugs I have noticed so far. There's still a couple but I'm very unsure about them and need a lot more testing.