Simply put, now games take too long to finish.
I can't play online anymore, else I would spend more than 3 hours, killing hundreds of mines and extra defensive structures (By the way Vasari missile platform is just pure cap killer now. Try it if you don't believe it.)
Even without mines, the game already takes way too long, even before the expansion. Now the things get much worse.
Here's my suggestion to attempt to relieve the situation:
1. Please fix the original balance problems. Light frigates almost useless, LRFs dominating the battlefield ended with pure fighter spam is NOT FUN. Advents with illum spam is pretty much early game ender. I suggested some ideas, and others did too. Please test them and implement them.
I'd like to see a light frigates being usable and Advent nerf rather than using a bunch of new units and starbases.
2. Just cap the number of mine per system. I think 20 is a good number. Any further number just makes mine spam no matter how much you increase the cost.
3. Now I see Ironclad try to implement the Starbase as a both defensive and offensive structure (Advent Vasari planet/structure weapons, very fast building speed) But the idea of bring constructor/colony frigates in the middle of battle to make this offensive will not work, since it is flawed.
-> Lack of range and mobility just make these things useless for combat. Again, I have to build that damn starbase near Planet or structures to do some sort of damage, but you just can't do that in late game when concentrated fire is plain insane.
-> Now such a insanely fast building speed seems introduced to solve the problems when used in offensive. But it is not working because.....
== Creates other imbalances due to build speed.
== Still does not address range and mobility problem.
As I said again and again, range is not a solution (FFS do you guys really want to make Advent overpowered? Even in current state they are necrons of Sins of Solar Empire. Increasing the range is about as insane as giving a nercron lord having 6 powers. FFS stop make this game more biased to Advent!) Only some sort of mobility would solve the problem. Look for my threads for more details.
4. Finally, please fix the speed bug (everyone who plays online probably knows about this now. For me it is annoying.) and make the game a little faster.