Been designing for SaaS startups for years now. These are the patterns I see founders repeat over and over:

1. Too many CTAs on the landing page. If everything is a priority, nothing is. One hero CTA. That's it.

2. Ignoring visual hierarchy in pricing tables. Your recommended plan should be visually dominant — bigger, colored, highlighted. Most founders make all 3 tiers look identical.

3. Onboarding that feels like a form. Progress bars, one question per screen, and celebration micro-interactions. Nobody wants to fill out a government form to try your product.

4. Generic stock illustrations. Those blob people with laptops? They signal "we didn't invest in our brand." Custom visuals — even simple ones — build trust instantly.

5. Walls of text where a diagram would do. If you're explaining a workflow, draw it. If you're comparing features, use a table. Respect the user's scan pattern.

If any of these hit home, that's what we fix at Instead Designs. We help SaaS teams ship interfaces that actually convert.