There's absolutely nothing wrong with you loving Shadowheart's romance. I'm glad you do! I do as well, but I can see she's severly lacking true romance content compared to other love interests and I want to express it. I've romanced all three ladies (with Shadowheart being my favorite despite lacking content) and you're wrong about Lae'zel. She opens up way faster in act 2 than Shadowheart and she expresses instantly how she cares for Tav. Karlach's romance is the sweetest (If you're into it) of all three and she has the most romance content of all the ladies.
And in comparison to romance path - platonic path, there are barely any differences for Shadowheart, which is very disappointing. Hence, my hopes for some tweaks, even small ones.
I think that I see Shadowheart as having so much romance content because I include the friendship content along with the specifically romantic content, as part of her romance. I consider all of the events that happen during a friendship with her as part of her romance arc as well. Starting as soon as you save her on the nautiloid. (It helps that she’s pretty flirty from the start.) That may account for my greater satisfaction with the arc. It all contributes to building a bond with her. And I’m ace, so like… I don’t personally need extra sex scenes.
Still, not disagreeing with the proposed tweaks at all. I would love to see a clearer affirmation of love in Act 3, softer dialogue with a romantic tone in Act 2, or another scene with her in Act 2. Certainly not disagreeing with that.
Personally, I would prefer if something was changed in act 2 for Shadowheart. Because her line at the end of the act with "so do you wanna be together or nah?" or pretty weak compared to Lae'zel's. Lae'zel's scene is honestly so heartwarming when we lose duel with her, it became one of my favorite scenes in the game. (not a fan of variation when we win the duel)
And the one with Shadowheart is... really not much compared to that and that's a very important moment, because we are locking a romance with her. But instead, we just got one sentence and that's it.
Plus, if you don't need extra romance scenes, you can always skip them. I personally would love to get another one.
There's also an issue with some new content she was supposed to get this patch. Some romance banter in act 2? Well, it doesn't work. At all. So that's more of her content being broken.