What you have to keep in mind is that the majority of new players are not going to be after that classic EQ feel because many of them never experienced it. They are used to the PoK/Philters/(NPC)translocators, single player tasks, mounts, and bandoliers. They are essential features to how they know to play EQ. I doubt 95% of the people who started playing around the time PoP was being released were even aware that boats traveling between zones existed (and remember that was released almost 10 years ago). To them SoD is not just a change in content, but is a complete change in game mechanics. Classes which could easily solo in the absence of a group on live (even in the pre 2002 days) are so 'balanced' on SoD that playing one as a casual player is in general frivolous since finding a group can be such a chore (something about the early eq days that I do not miss).
Even the handful of us who started eq pre PoP got used to having a PoK for getting around, and the MoP is a weird compromise. Having to play solid snake to get from newport to athica is just silly (it doesn't add anything to the gameplay). As was pointed out, it has more potential to give the mindset to new players that the rest of the game has such equally irritating gameplay. (Personally the previous version of MoP where all you had to worry about was the chance of catching a portal disease was fine).
Alas, SoD is what it is because of the content. It is what differentiates it from live and other emus. Nonetheless SoD is still EverQuest, and that is fundamentally why people play it.
The difficultly for SoD though is the EQ audience that makes up the majority of potentially new players has changed in so many ways since the GoD expansion in terms of gameplay expectations.
darksabbath put it best
players want EVERY available advantage, no matter how minor
and a big part of that is going to be the familiar features they used to play the game. The use of a severely outdated client on SoD is a big negative for drawing in a new crowd. Whether it is due to issues in graphics engine (GoD was a horrible buggy expansion in this regard), or missing things that have become very basic features like bandoliers/potion belts, buff timers, etc...
There will always be a select crowd who argue that these features are not needed for whatever reason, but how many people actually use the spell book the way it was originally intended prior to the popup menu on the spell gems? The point is, if you were looking for an eqemu server, and logged in to find that this feature was missing it would give you more of a bad taste than than a good one.
The avid EQ players from 10 years ago are not the target group to draw new players from anymore. We are as outdated as the client software. The fact that eqemu was brought back into compatibility with a more recent client after so many years is evidence that there are still new emu players to be had, but they want to play using the client they are comfortable with. There really shouldn't be any reason for them to choose other servers over SoD.
If SoD 3.0 ever gets released, it will be a big selling point for new players if for nothing else than it will be a more familiar client to them. It will probably be met with resistance from a handful of current players (change always is), but if the goal is to bring in new players, then so be it.