There a several issues on CAcert.org that should be dealt with. Mainly regarding design and wording problems, but for the professional look of CAcert it's as important as the technical side.
Your welcome to drop you own suggestions here. Just edit THIS page, create a new bullet point, save this page and click on the new link to edit your new case. Hopefully the CAcert administrators will find this page someday and implement everything ... 
Important
Open
Idea for WebsiteUsability improvement
Is there any procedure to ChangeNameAndReassure?
Having "SecurityQuestions" is insecure
#0002: Additional Information for ttp and cap - (Open, 2005-06-16)
#0018: Wrong or missing information on CAcert pages - (Open, 2005-06-19)
#0025: Tverify fails when ID picture size is too big - (Open, 2005-06-26)
#0032: autocomplete should be off for lost password questions - (Open, 2005-07-01)
Closed
#0001: CAcert Logos Page - (Closed, but bugs in patch/images, 2005-07-22)
#0023: Empty Lost Password Questions Allowed - (Closed, 2005-07-15)
#0034: character encoding of CAcert.org website - (Closed pending further feedback, 2005-07-22)
cacert.org's cert uses a Md5BasedHash and relatively predictable serial numbers, but MD5 should be phased out
Should be done soon
Open
Website Password: The PasswordRequirements make the search space smaller which means effectively less time to brute force it
- this wiki help on bottom of editpage is rendered html (i.e. "kursiv" is kursiv and has no visible markup attached to the word)
- the help on this page: should i enumerate every item manually?
#0005: General wording - (Open, 2005-06-16)
#0011: Trusted Third Party Form - (Open, 2005-06-16)
#0012: then vs. than - (Open, 2005-06-19)
#0013: Cookie Warning on Login Page - (Open, 2005-06-19)
#0017: Find an Assurer List: Usage of First Name - (Open, 2005-06-19)
#0019: Thawte verification assumptions - (Tranfered to bugs.cacert, 2005-09-06)
#0020: Change-Language Links all Link to index.php - (Open, 2005-06-19)
#0021: Client Certs don't show name if using middle initial variant - (Open, 2005-06-21)
#0022: Seal verification - (Open, 2005-06-22)
#0026: Wrong language for you've been assured & Client Certificate emails - (Open, 2005-06-27)
#0029: Max Points on cap.php forms makes no sence - (Open, 2005-06-28)
#0030: Missing Cities in the WoT Assurer list - (Open, 2005-06-28)
#0033: GPG Key Signing broken for RSA Keys? - (Open, 2005-07-02)
Closed
#0003: Please Remove Help Page 2 - (Closed, delinked item from help menu, content needs shifting to wiki, 2005-07-22)
#0004: Structure of help.php - (Closed, Pending suggestions, 2005-07-22)
Design - Problems and Optimization
Open
#0006: Further Information Page - (Open with patch, 2005-06-16)
#0007: Stylesheets for h3 tag - (Open with patch, 2005-06-16)
#0008: Contact Us Page (Forms) - (Open with patch, 2005-06-16)
#0010: Contact Us Page (General Layout) - (Open, 2005-06-16)
#0027: Link to Mailinglists not easy to find - (Open, 2005-06-27)
Closed
#0009: Credit Page Layout - (Closed, 2005-07-22)
Feature Requests (part 1)
#0014: Image Translation - (Open, 2005-06-16)
#0015: Translations of CAcert.org - (Open, 2005-06-16)
#0016: Subscription watching for assurers - (Open, 2005-06-19)
#0024: Multiple WOT locations - (Open, 2005-06-24)
#0028: Add GPG Key ID to list of signed Keys - (Open, 2005-06-27)
#0031: src-lic.php not linked - (Open, 2005-06-29)