First, let me start with the disclaimer, I hate dropships and dropship pilots, mainly because they are a continuous and nebulous threat just waiting to rush in and ruin my gunfight and they usually think they deserve to be unassailable. I'll look at the lineup before a pubmatch and offer my squad bounties on known dropship pilots. "First one of you to kill X (Judge) in his DS gets a million isk!"__ I usually go on to say I don't care how, rail installations are best, but ramming the DS with another DS is encouraged.
Swarms only work in combination with numerous other AVers and they should be buffed, they need to be fast enough to hit dropships that hit afterburners and outrun every other volley. An AA swarm is needed.
Anyway, the idea of limiting rail elevation and range is unreasonable. You will always be able to use terrain contours to elevate a shot above the normal range of motion, so any additional limits would be pointless. As for limiting range, it would neutralize the role of AV sniper. I realize you don't like being sniped, but you should be thankful you have enough EHP to avoid being one-shotted. You're already basically immune to infantry AV, but that's not enough for you (typical DS pilot entitlement). I would grant you a higher flight ceiling, or cheaper dropships, but not immunity from snipers.
As for redlines, they are only an issues with Skirmish 2.0 and Domination (lame game modes). I hope they fix the redline problem by reverting back to Skirmish 1.0 (a knockoff of BF rush). Attacking in circles (from A to B to C and back to A) feels a bit circular, and rolling objectives on longer narrow maps would make the busdriver role less lame.

I'm fine with removing redlines, but don't nerf the only real counter for the Dropship.

CEO Pyrex agrees with Judge. While utterly dominating in a Domination (Assault Dropship), he lamented on the level of risk a prototype railtaink represents. He cited all of the rigorous evidence, because you guys think tanks should have less range and be prevented from pointing up... silly. I'm fine with removing redlines, but don't nerf the only real counter for the Dropship.

I think the redline should be an energy shield that blocks weapons fire. I think there should be more ways to kill the OP assault dropships. I understand that they are really fun and add some dynamic tactics to the otherwise two dimensional gunplay, but I really hate seeing those pilots get kill after kill with 0 deaths. I hate seeing them shoot up out of range of ALL weapons when there's a threat detected.

CEO Pyrex agrees with Judge. While utterly dominating in a Domination (Assault Dropship), he lamented on the level of risk a prototype railtaink represents. He cited all of the rigorous evidence, because you guys think tanks should have less range and be prevented from pointing up... silly. I'm fine with removing redlines, but don't nerf the only real counter for the Dropship.

Ad-hominem? I don't think that applies when the claim is evidence based. It's more like a Dust Meme.

Railguns do more damage, but HP and resistance values were modified so the dropship is tougher than ever. It was easier to one-shot a dropship pre 1.7, and while it may be true that railguns do more damage, the fact that dropships are more survivable now makes the statement about damage a misdirection. The whole video was the unsubstantiated fluff (with some excellent examples of team support - btw Judge, thanks for the videos). It had nice graphs, sure, but you could have just said. "I don't like how tanks are able to shoot up in the air."