I personally hate Mass Drivers due to the PQ drop as well as Gas Warfare. I just cannot see myself wasting so much potentially useful space. And Tidal Disruptors are great, because most of the AI's devolop their world really idiotically. Tidal Disruptors are great for destroying a fair deal of generally useless structures, allowing me to build whatever and however on the newly conquered planet.
If the AI's would use "All-X" strategies (and on top of that intelligently), I would be a little more careful with my invasion tactics, using Information Warfare, and Mini Soldiers a lot more than Tidal Disruptors. But that's not a problem for me because I already like using Mini Soldiers a lot.
The only times that I have ever used Mass Drivers and Gas Warfare was during the campaign, where capturing planets is not a priority and for that matter, a big deal.
It would be really awsome if an update was made, or if someone created a mod that incorporated NEW invasion tactics, while at the same time, improving on the ones that already exist. I don't know if anyone made such a mod, but if they did, please tell me about it or post me a link. There's just too many damned mods to look through, terrible waste of time if you ask me. Even with the incorporated category system.
Either way, this game rocks and I absolutely love it.
To everyone listening......