I looked over the AMA and all the recent interviews, nothing confirming nor denying. We know for certain that all PHB classes and subclasses will be in it. Considering they are allowing races such as Drow and Githyanki though means they won't limit themselves to it and include what they want so long as it makes sense in the story. If you really want to build a hydromancer/cyromancer focus on frost/water spells and pick a class that allows you access to the most number of those spells.
Thinking about it logically, variety is important to combat, in DOS games I built up my party on 1 magic type and 1 combat style per character to ensure combat optimization. In BG classes are much more important so focussing your damage type to one could leave you at a disadvantage. D&D has a degree of chaos and randomness to it that makes it great. But it might leave you stuck if you encounter an enemy that neutralises all your damage spells. Hypothetically what would your Warlock with the Lurker in the Deep do if it was attacked by a water elemental, and what would my Fiend Warlock do if they encountered a hostile fire elemental?
The thought just occurred to me thing of the subclasses.
Last edited by TheAscendent; 26/06/20 10:08 PM.
