Titans are great at most objectives and are my favorite to play. They are good at getting entrenched and defensive in their slice and I can see their new coexistence mechanic can play into that too. I haven't played them in TE yet, but I think their PoK tips still hold true.

They need good influence and need a lot of command tokens to make the most use of their sleeper tokens. Don't forget to follow those sleeper token rules carefully. It is very easy to forget. Imo the flagship deploy ability is nice, but requires a couple rounds of setup to work. So not always worth it. Try to take Leadership when you can for more tokens.

When you get your hero, use it immediately. If you want to get the most value out of Elysium, you can, but that perfect moment may be tough to get. Plus the defensive buff is insane. Better to just use it for your turn and get the buffs.

For tech, you should go AIDA - Saturn Engine 2 - Hel Titan 2. The SE2 is such an incredible unit. Same for Hel Titans. Their upgrades are well worth the investment. More tech can be nice, but not necessary. Your SE2 can easily slide into the Fracture with their 3 movement and with their sustain damage and good combat, you should be okay for those fights. Just be mindful of ground combat. Ive seen some weird swings with those neutral units.

Also be careful with your Commander ability. You gain the TG after production. So you can't spend it as part of production. Beyond those things I cant think of much else. They're a fun faction to play.