The list will work well... got all of the solid components. Might I ask what the occasion is? 1500 points... is that a local shop game size? Or just you and some buddies... I ask because my experience is with 1750 and 1850 games...
For some changes, I would recommend taking less of the bad necrons and more of the good ones. Try dropping the third warrior unit and use those points to add destroyers. The more destroyers you have, the safer your investment in them will be (let me know if that makes sense to you). Also a change that does not require any points is to take your 10 man immortal unit and split it in 2. It doesn't seem like it makes much sense, but just keep them within 6 inches of each other and you are more likely to get your
wbb rolls. Don't let the smaller units get charged by large assault units. This gives you more flexibility in choosing who to shoot with and more scoring units to start with. I know the drawbacks of having two units, specifically that you can't move the whole unit with the veil. For my playstyle it is still the right choice. I tend to not ever have to move them anyway, you don't want the unit getting seperated and surrounded by falcons thanks to a bad scatter. I use the veil to set up any assault units to be shot by pulling units out of
cc. You'll need to stay very aware of any enemy assault elements and ensure that both of your units can't be charged at the same time. This way the veil or monolith moves don't shift your deplyment too much, the phalanx stays intact and you have the maximum control over your shooty units. 9 out of 10 times i veil warriors because i use them as the assault catcher.
So try adding 2 more destroyers and dropping the warriors. Honestly, don't worry about phase out. I play a 1750 list with 44 necrons in it. I never get phased out, honestly. the few times I can remember when I was phased out, the game was hopelessly lost to me anyway. I play to protect my necrons, and you should too, but I wouldn't over-hype the phase out chances of a shooty necron list.
You've obviously got an eye for what is good in the army book, and you'll have a great time beating the stuffing out of tau and eldar. Drop-pod marines and iron warriors give me fits however, and will probably do the same to you.
Dont use the veil to split your forces, you don't have much
AP so your marine kills are gonna be when your whole army shoots at one unit and hands him a bunch of armor saves. Also, staying close helps you draw the skimmer armies in close enough to you so that you can take down their vehicles and the soft mushy riders inside. Don't be too aggressive with your destroyers, if you lose them early you lost basically.
excuse the unsolicited tactical advice i added, i just wanted to make sure you got a reply that was longer than two sentences.
I am thinking about playing necrons this year for tourneys thanks to the eldar codex coming out and it being so punishing to the "castling" or "lascannon heavy" lists out there. I seem to eat Tau and eldar players' lunch in my testing. Unfortunately, people who have 6-10 lascannons and lots of mobile plasma or assault cannons don't have a problem bringing down my units that have teeth. What i'm hoping is that some percentage of those players are going to think that they should shoot at my warriors to phase me out, and I'll get my res orb powered
wbb all day long while my destroyers take them apart. Also i hope that in the first round or two the marines will be playing tau and eldar and losing to them. Then maybe i can get some favorable matches later if i make it that far.
so anyway, I am gonna be watching for necron bat-reps. If you can, please come back and let us all know how your games are going. It will help me on my unending quest to accumulate and process data.