Normally a decent choice thanks to his army wide buffs, however if your not making use of them than he really tends to just be a more expensive captain with some extra stuff. I would suggest dropping him for a captain, different character, or maybe even a librarian so some of those points can be spread around.
-3x tactical marines 1sgt 9mrns
+plasma rifle
+laser cannon
+power fist
+melta bombs
If your running a close combat weapon in the squad, then I would very much not suggest a plasmagun. Since its rapid fire, if you get close enough to double tap the thing, you may be close enough to charge, but if you shoot you can't charge, and if you charge you can't shoot it so something gets wasted.
For these units I would suggest taking meltaguns, as not only do they compliment powerfists but you can shoot them and charge in that turn. I would also lose the meltabombs; they aren't going to do anything against infantry, and against most armour you will likely use the higher number of powerfist attacks over the single meltabomb attack. (The only situation I could see this not being the case is against a monolith, where a powerfist is a bit fucked but thats one vehicle amongst a plethora of others.)
-6 terminatos
+cyclon missiles
Interesting unit, maybe drop one for points elsewhere to do other things, otherwise I would leave them as is. Keep in mind though, at 1500 points these six guys are 18% of your list and enough points for you to get a larger squad elsewhere.
-2 vindicators
+dozer
+extra armour
Interesting choices, though I would drop the dozer blades because their use is extremely conditional and you can spend those points elsewhere. Extra armour I would keep, yeah if it gets hurt the thing isn't firing, but you do want it to get a little close, and being able to move is still better than nothing at all.
-predator
+side requiem
+extra armour
Gonna assume side requiem is sponson heavy bolters actually. Doing the points you would be over 1500 if it was an autocannon/lascannon combo while the dakka pred puts you under. If that is the case and you want to keep the predator, I would suggest the autocannon/lascannon combo; otherwise I would very much recommend dropping this thing in favour of getting your tactical squads rhino's so they are not stuck slogging it up the field to potentially be torn to hell.
