You can approve as early as by level 6 - you needn't wait till level 10 for that. You can also post any HTML you like on your homenode past level 5, which means you can make an image tag that points to a script which returns a random image. Most of the top ranking saints already post something or other every once in a while; and some of them are quite busy outside Perlmonks and might not jump at the chance to take yet more duties..
And why do we need more privileges anyway? Just because? The system ain't broke, so why fix it?
Makeshifts last the longest.
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link
or How to display code and escape characters
are good places to start.