How does halving the Devastators' (and Tacticals' for that matter) ranged firepower make them more "elite" or flexible? Rather it limits their use, slanting them towards Thawk assaults since there's now little use for them outside firefights. What is it you want to achieve, Glyn? You state you want the marine infantry to be more attractive and used more, so you nerfed them to make them cheaper. I'm not convinced this will get the results you are after, but that's what play testing is for, I guess...

The insistence on halving marine infantry ranged firepower seems needless to me. Basically you say that you're changing one 40K game codex standard for another, right? Sure a marine squad might be 10 soldiers on paper, but in the field, people will always be missing. This combined woth superior marine marksmanship, targetters, automated weapon loaders, power armour strength and suspensors can all be seen as excellent reasons to have their infantry shooting one heavy weapon attack per stand. I don't feel that EA should be about nit picking and counting the exact number of models per stand. Rather you should be aiming to get the general feel and effect of the troops involved. The marines getting of twice as many heavy weapon shots as IG certainly reinforces the "elite" feel you said you were after.

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"Don't use finesse, if force will solve the problem."

- Lieutenant General Michael O'Neal

You might like to see space marine 1st edition. That split marines into the squad components - so tacticals into a unit with a special weapon (melta I think) and support (missile launcher) and so on.

Otherwise is the goal to mirror the range of units 40k has? What range of tactics do you forsee this allowing more than the regular list?

I present an alternate Warhammer 40,000 Space Marine Codex I’ve written ... I personally think ALL current Space Marine Codices do a poor job of representing the Space Marines in many ways and I’ve basically tried re-doing the list and units more true to the background and how they play in Epic Armageddon.

It seeks to update the Marines and to correct mistakes; to better bring them in line with the background of a ‘codex’ chapter and the restrictions of the Epic Armageddon list. Specifically it has Tactical Marines, Scouts and Terminators with DOUBLE the amount of heavy weapons they have in Warhammer 40,000 now, as they should by the extensive and clear background (both old and new)...

Click here to download.

Have had a read; Whilst I don't see it gaining any great acceptance in the community, I'd be happy enough to play against it.

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Currently doing a plastic scenery kickstarter

If you want to bring them up to date with current 40K, that's fine, but the Codex SM list was not full of "mistakes." It was written based on the force at least 2 codices prior, and it was made generic and abstract specifically to exclude all the minor variations of units and formations that change from 40K codex to 40K codex, e.g. ever-expanding veteran options.

In other words, it's a feature, not a bug.

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As to the list...

Don't use Disrupt in assault. It's confusing and there are no rules or FAQs on how the ability interacts with the assault rules.

Tacticals at 1/2 firepower are worth considerably less than you marked them down. If you assume the Codex Tacs are 275-300, these are 200-225. Similar point cuts should be applied to other formations as well.

As others pointed out, the removal of firepower and increase of assault ability (via the veteran options) pushes this list strongly towards deepstrike options. If anything, this is intensifying the most common complaints about the Codex list.

Following on the previous, with decreased firepower and increased air transport costs, this list is likely substantially underpowered.