Ubiquitous Duck said:
I dunno how I feel about new characters though, do they fit in well enough?
It is hit and miss. Most of them don't provide anything unique to the experience. The only exception is Neela who is a wild mage (a kit you could also choose). Basically she gets improved spells per day like a specialist mage but has some chance of something going wrong with the spell - going wrong could, in this case, be beneficial (making your spell play out as though you were a much more powerful mage) or harmful (it could kill you). Those drawbacks are reduced over time making her unreliable early on and a powerhouse late into BG2.
All told, they all could be left at the wayside as the cast between BG1 and 2 was fairly complete already giving you access to just about any type of character you'd want to have. Having a blackguard is nice if you want to build an evil party and some of the party interactions are fun. In some cases, Beamdog built characters poorly. I can't tell you the example directly but suffice it to say that the way one of the NPCs comes to join your party doesn't make much sense regardless of your alignment.
Ubiquitous Duck said:
I want the continued storyline of having one character through bg1 and 2 as well, so I need to replay bg1 to get this. I remember the dwarf fighter I made when I was little had like max charisma, low strength and all kinds of terrible stats. He was definitely not a force to be reckoned with!...
If nothing else it makes the transition progress much simpler as there are lots of kits you might want to use in BG2 that weren't naturally available in the first game. I personally didn't have any problems running either out of the box. Also, take heart that a great many of the mods that added content to the game still work in the Enhanced Editions. My personal favorite is the one that lets you skip that dreadful first dungeon in BG2.
There are also a handful of improvements to the UI but for the most part it stays true to the clumsy Infinity Engine interface you (may) have grown to love.