Taking a second look at what will be available at early access I think this build would be a very fun scout / face for the party build
and assumes that feats might not be ready by then.
A stealthy Great Old One Warlock:
GOO LockPatron DetailsClassBackstory: No pact required, you could have simply stumbled across some ancient writings: "The Great Old One might be unaware of your existence or entirely indifferent to you, but the secrets you have learned allow you to draw your magic from it."
Background Urchin: Stealth, Sleight of hand
Disguise kit, thieves tools (Like Sven I enjoy sneaky exploration)
class: Deception, Intimidation (Different tools for the face of the party)
race: Persuasion, insight (again for social interaction)
Level 2 pick up agonizing blast + 1 other invocation
Level 3 Pact of the chain and trade you second invocation for Voice of the Chain Master.
You can communicate telepathically with your familiar and perceive through your familiar's senses as long as you are on the same plane of existence. Additionally, while perceiving through your familiar's senses, you can also speak through your familiar in your own voice, even if your familiar is normally incapable of speech.
You can now scout the entire map with your invisible Pseudodragon having +3 perception with advantage. Additionally you can safely initiate dialog through your familiar with your own voice...sounds like crazy RP fun.
Levels 4 and 8: max out charisma.
Many usefull spells in the GOO list. including clairvoyance, dominate X, Evard's Black Tentacles (handy for a blaster to hide behind), and Telekinesis.
It will be interesting to see how these are implemented, but in early access we are pretty much testing them out.
Watching Sven slap creatures around made me think that repelling blast would be tones of fun! (If the blast doesn't kill you the fall may hurt worse).
Pulling creatures may be also viable but there are many good invocation possibilities including being a master of disguise or casting silent image at will for some thematic shenanigans.
Finally the 10th level "temporary capstone":
Thought Shield: Starting at 10th level, your thoughts can't be read by telepathy or other means unless you allow it. You also have resistance to psychic damage, and whenever a creature deals psychic damage to you, that creature takes the same amount of damage that you do.
Oh this wouldn't be handy at all in a boss fight against Mindflayers....throwing Mind Blast at you.
Afterthought: as a Chain GOO can I sneak up with my invisible familiar and intimidate you telepathically? (Telepathy is a 1st level feature)
