I finally gave 0.86 a try and am at this point cautiously optimistic that the game will be a great success. There are however a number of issues I'd like to bring to the attention of the developers; I'm sure many of these issues are already well known, but in the off-chance that they aren't I'm writing them here in hopes of making FE as good as possible!

• Units on the tactical map, and the strategic map too, need a sense of weight. Right now, they are instantaneously moving from point to point. Simply by providing acceleration, both to beginning and end of trip, a much needed sense of mass and feeling will be added to the various armies of the world.
• Improvements built upon shards, bees, etc, are too easily rebuilt when destroyed by enemies. Yes, destroying an improvement does deny the owner access for a small number of turns, but to the person destroying the improvement, it is rather disappointing seeing construction pop right back up the second the tile becomes unoccupied again. So I'm suggesting a cool-down of sorts is needed in between the destruction of improvements and before they can be rebuilt. There are a number of ways this could be done: rubble could remain on the tile after destruction, requiring a cost and let's say, 4 times the construction time, for removal before the appropriate improvement can be rebuilt. Or a simple countdown could be issued that begins counting down immediately without cost. Either way, this will make destroying improvements not only more satisfying, but also more strategically rewarding and, make them worth defending more vigorously.
• Tactical sound effects are extremely limited at the moment and I can only assume you're fully aware of this. Melee attacks are sometimes quite missing or incredibly quiet as are the sounds for deaths, spells, etc. These absences aren't hard to discover and distract greatly from the tactical experience.
• Corrupted textures. These are understandably very, very annoying and only detract from the overall experience. The place I'm seeing this most often is with the unit health bars on the tactical map. But the strategic map is very affected by this issue as well.
• Magic related perks need some testing / help. For example, I selected the "master water" perk and in the description it said I would be provided access to a spell called "mantle of the ocean". I checked on both the tactical and strategic map but could not find the spell anywhere.
• And finally, the UI and presentation needs a very healthy dose of polish. Tooltips flicker in some windows; the cursor does not graphically change when necessary a large number of times; models flash when doing construction; there are issues with zooming and 3D elements (an issues with matrices I'd assume); a great deal of stuttering going on in between transitions of screens, tactical / strategic map, etc.

Well I hope you guys get a chance to read this post and that you find it helpful. I look forward to beta 3