I too run an army led by "Vulkan." I think that you have a good start with your list. I have been using razorbacks with my tactical squads and have been getting my teeth kicked in by armies that use drop pods. What the drop pod does that a razorback does not is
disrupt!. When you land that drop pod in your enemies deployment zone you get up in his face and force him to deal with some
BS that comes out guns-a-blazin! His first turn or two is now spent trying to react rather than execute his plan. He could ignore the drop pod and it's payload, but that's almost even better for you.
I have modified my mech list into a 1/2 mech 1/2 drop list as follows. I haven't used this list yet, so
your mileage may vary
2000 pts
190 vulkan
200 5 assault terminaters
250 landraider w/ multimelta and heavy flamer
305 10 sterngaurd with 2x heavy flamer, 2x combi melta, powerfist
35 drop pod
115 dreadnought w/ multimelta
35 drop pod
70 landspeeder w/ multimelta and heavy flamer
70 landspeeder w/ multimelta and heavy flamer
65 landspeeder storm w/ multimelta
195 full
tac squad w/ flamer, multimelta, powerfist
35 drop pod
195 full
tac squad w/ flamer, missile launcher, powerfist
40 razorback w/ twin heavy bolter
200 10 scout squad, sarge w/ combi flamer and powerfist, missile launcher, 4 boltpistol/combatblade, 4 sniper rifles, 5 camo cloaks
(not sure if i can give only half the scout squad camo cloaks or if it's all or nothing.)
The idea is that the dreadnought and sterngaurd drop the first turn, right in the enemy's face. The nice thing about the drop pod is that I don't have to decide if i'm going to combat squad the squad inside until it hits the table and they deploy. The heavy flamers are assault weapons, that means that I can fire them the turn they disembark. I can take on hoard, armour, or whatever. I don't even have to split them up at all If I don't want to. I don't expect them to live very long though, but that's ok, as they're not a scoring unit anyway. Same for the dreadnought. Come down and make a ruckus! This draws the enemy's fire away from my landspeeders and scouts while I move into position. The half squad of scouts with snipers sits on my home objective while the squad of Tactical Marines lends support. They could b combated to ride in the razorback or not, depending to the need. The speeders go tank hunting and the storm goes after other objectives or lootas/devistators/havocs to tie them up. With only 3 drop pods I only have one unit in reserves, and that's a scoring unit: a Tactical squad. They come later to where-ever I need them. The landraider packed full of assault termis is just downright nasty. I use 4 thunderhammer/stormsheilds and one twin lightning claw. This army also maximizes Vulkans special powers as every unit benefits somehow!
check out my painting progress here:
http://www.dakkadakka.com/dakkaforum/posts/list/297421.page
Good luck and happy hunting!