Roland gets free clues for killing stuff and has access to Seeker cards like Magnifying Glass, Hyperawareness, and Working a Hunch, which can help him push forward even if the encounter deck decides to deal out nothing but Treachery cards. Daisy has issues as well, stemming from her inability to deal with enemies. However, she also has access to Hyperawareness for evading and Mind Over Matter for important combat checks (Ghoul Priest.)Agnes is a total beast who can do it all. Investigate? Flashlight, Arcane Studies, and tons of Intellect icons to commit. Kill stuff? Shrivelling, Blinding Light, Forbidden Knowledge, hell, even just let enemies with horror attack you and assign the damage to an asset. Search? Scrying. Draw? Heirloom.
I haven't played Wendy since 2 cores isn't enough cards to build 5 decks, but I imagine she's pretty versatile.
Skids doesn't really have access to anything to fill in the gaps in his repertoire. No +Intellect assets and a dearth of Intellect and Willpower icons to commit, no +clues cards other than Evidence! which is dependent on enemies spawning, etc.
Your complain about Skids inability to Investigate without drawing a Flashlight is the exact same as you saying Daisy can fight if she draws Mind Over Matter. In both cases, you're depending on one card out of 33, but you only consider that a drawback for Skids?
Roland and Agnes are great solo, because they have strengths in a lot of areas, and access to multiple cards to fill in the gaps. Skids and Daisy both have larger gaps in their abilities to solo, and access to fewer cards to ameliorate that. I don't see why you're hating on Skids so much for that, but seem to be OK with Daisy. Perhaps you've just had bad luck with him, as I have with Wendy? I'm sure she's great solo for some people, but I hate her. That's not to say she's a bad Investigator. Just that I'm unlucky with her, or don't know how to pilot her deck.
I did acknowledge that Daisy has significant weaknesses. However, I feel she's in a somewhat better place than Skids for a couple reasons:
1. Clues win games. If you play well and get a little luck on your side, you can blitz through the first 2 acts of The Gathering without ever seeing an enemy, then hole up in the Parlor with Barrier until you're ready to take on the Ghoul Priest.
2. More versatility. Seeker/Mystic is probably the most diverse set of effects you can get in two classes. Card draw, search, resource generation, clue finding... All universally useful. Fighting and vasion are only good if there's something to fight/evade. For a Treachery-heavy scenario like The Gathering, Skids is frequently SOL with a bunch of useless cards in hand that don't even boost Intellect. Just burning all his actions to draw cards and holding onto the few +Intellect icons he pulls. And if you get hit with Obscuring Mist in the Cellar? Fat chance you ever flip the Parlor.
Do you mean Barricade? That doesn't stop the Ghoul Priest as he is an elite enemy.
"Non-Elite enemies cannot move into attached location."