Okay, with a *bit* more time on my hands, here's some more specific advice on your list. For the record, I will assume you are playing Imperial Fists.
1x Librarian - lvl2, Terminator Armor
While I don't have any inherent problem with this guy as an HQ, the presence of a librarian removes access to a wide variety of formations which, I feel, would serve you better than a single Libby would. Change this dude into a cheap captain or, if you've got the points lying around, a Chapter Master.
10x Terminator - 1 Heavy Flamer, 1 Cyclone Launcher, 3 Chainfist
+ Land Raider Redeemer, Multimelta
Split this unit into two
units of 5 Terminators. I'm not crazy about the Land Raider, in general, since there's a bit too much of a target on its head to survive drop melta and so-on. You might be better served changing that Land Raider into another unit of Terminators and putting them in a First Company Strike Force.
1x Venerable Dreadnought - Assault Cannon, Heavy Flamer
1x Venerable Dreadnought - Multimelta, Heavy Flamer
I'm inclined to suggest dropping one of these so that you can put them into a Battle Demi-Company. You could, of course, keep them in one unit for the same effect. As they seem to largely be fulfilling the same battlefield role, that seems wise.
10x Tac Marines, Flamer, Heavy Bolter, Meltabomb
Unless you're mounting them in a drop pod, don't take a full squad of 10 Tacs. The Rhino isn't a reliable enough transport to take them where they need to go. If you plan on combat squadding anyway, just split them into two separate units and bingo, you've got a Battle Demi-Company and access to all it's goodies. If you took a 1st Company Strike Force, you now have a Gladius Detachment. Enjoy all those doctrines, my friend.
10x Tac Marines, Plasma, Heavy Bolter
Trim to a smaller squad. Given your overall lack of AP 2, I'm inclined to suggest taking a 5-6 man squad with a plasma gun and a combiplasma in a Rhino. Better still would be a Grav Cannon and combi grav in a Rhino.
5x Assault Marines, 2x Flamer, Jump Packs
A good unit to deepstrike and use to get Linebreaker or to take out weak objective holders. Also gives you access to the DemiCompany, which again I recommend.
10x Devastator, 2x Rocket Launcher, 2x Laser Cannon
Missile Launchers are terrible (terrible) unless you have a dire need for anti-aircraft fire. 4 Lascannons, please. You don't need 10 guys.
This doesn't quite fit with the list, I'm afraid. I mean, yes, your list as-is could take a lone Vindicator, but it has been my experience that 1 Vindicator does very little, whereas 2-3 Vindicators are pure gold. Personally, I'd take it out.
With point saved from dropping a Venerable Dread and the Vindi, you could re-buy a LR for some terminators (not my favorite choice). You could buy a unit of Sternguard in a drop pod for the First Company Strike Force (which is a good one). You could buy yourself a command squad in a pod weighed down with special weapons for the DemiCompany (which is also pretty handy). In general, you could use some of these points to fill out squads and give them special equipment, which might also be handy.
I should note that the list you have, as-is, isn't bad. It just isn't taking advantage of many of the special rules that the SM codex offers--Doctrines, formation bonuses, etc..
My .02, for what it's worth.