Well thus far I've played through one map to completion and put a good 5 hours into another one. I'd like to point out some things I liked and didn't like.
I appreciate the ability to make a map with 100 planets and 10 star systems as I am a fan of the large epic maps in any strategy game be it turn based or real time. However I've got a gripe with the generation of the map. I made the 100/10 map and placed 3 AI into the slots, my hope was that it would give us each our own system to start in and we'd be slugging it out over the various systems in the galaxy. What ended up happening was 2 of us in one system and two in the other. I understand wanting to promote some kind of conflict early on but an option for another way would be nice.
I also noticed in this game that the AI did not spread to any system besides the starting one, I've killed the one in mine and the other two AI are just duking it out in the middle system. So out of our 100 odd planets only 20-30 of them are even seeing any kind of use. Perhaps something in the AI isnt working correctly to get it spreading out more.
I like being able to get my fleet to jump as one, however the phase where they are aligning the formation to depart could probably use a bit of tweaking, ive noticed ships getting stuck in some kind of twitchy limbo really slowing down the war

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The economy setup I like quite a bit, I do think that there should be two types of marauders, there should be pirates attacking trading lanes, for example the sun is often a place of trade traffic outweighing anything else but almost all pirate activity is just large frigate fleets being thrown at walls of defenses in well guarded planets based entirely on bounty it seems. I'd like to see something like bounty hunter factions trying to collect on that and then the run of the mill pirates, using faster ships to raid trade vessels.
Capital ships, I love that they are these behemoths of the battlefield and are relatively rare compared to the other ship types, I like the special abilities they bring to the battlefield, However Id like to see some more variety in the ships available besides them. As it stands now I end up with a nice variety of capital ships and nothing but LRM frigates and kodiaks or cobalts with a few flaks thrown in for moral support.
I'd also like to see some type of supercapital ship class, maybe something you can only have one or two of, a true flagship of the empire. A system like Galciv 2 for ship design but not as complex would be cool, keeping the same base model for things and just choosing the type of weaponry the chasis has would be cool. I dont know if that's a possibility with the models already created for the ships. I know it's the beta and not everything is in and so on but I still want to throw that out there.
This is more of an aesthetic gripe, the research tree upgrades, would it be possible to have some kind of graphical indication that you've upgraded your weapons. Different models for missiles, different effects for projectiles and lasers as you advance your technology. I just find it slightly awkward that I keep piling improvements on everything, new armor, new shields, new weapons, and it all remains the same throughout. Also more pronounced shield effects would be fun, many times it seems like stuff is just pinging off this invisible wall. It would be cool if the frigate class ships not based on lrm did some bobbing and weaving in combat as well to liven up the action a little bit

One technical bug I noticed has to do with the noise the robotics cruisers make, for one it's kind of annoying on it's own but whenever i come in contact with one of these things, the sound effect it makes kind of overrides everything. Since the computer uses a TON of those things, I've had entire battles where all I could here were those blasted cruisers.
The AI itself could use some work on fleet composition, in the rare event i manage to find a fleet or get attacked it's usually composed of 90% light carriers and robotics ships. At first I thought they'd created it to counter my fleet which had little flak protection like galciv AI would do but ive seen that fleet trend in all my games thus far. I did see somone posting we should see some AI changes soon and I'm looking forward to it, but I figured I'd share my observations.
I also think you should release the other two races so we can help with the balance there

yea that'd be nice

All in all I'm having fun, not really finding any bugs in my play, it runs smooth in all the matches ive played so far and I appreciate the chance to test and improve what's looking to be a great game.