Well, memberinfo is the place from where you issue non-post-related warnings.
If you do not use non-post-related warnings, or if you are willing to issue non-post-related warnings from your admincp, you are not loosing anything, the rest of the info, like how many warnings a member has received, how many warning points he has, and how many bans, is already there in each member's post, or in your admincp, User page.
But, it's not difficult to find/create a spot within memberinfo to put the warn/view warnings links and the warnings info, if all else fails, just add a small table at the bottom, something like:
HTML Code:
<table>
<TR><TD colspan="2">
Warnings Information
</td></tr>
<if condition="$showpoints==1">
<tr><td>Alerts:</td><td>$userinfo[aletrs]</td></tr>
<tr><td>Warnings:</td><td>$userinfo[warnings]</td></tr>
<tr><td>Warning Points:</td><td>$userinfo[warning_level]</td></tr>
<tr><td>Bans:</td><td>$userinfo[warning_bans]</td></tr>
</if>
<if condition="THIS_SCRIPT=='member' AND $vboptions[warn_allowoffpost]==1 AND $buttons=='Text'">
<tr><td colspan="2">
<if condition="$showwarnlink==1">
<a href='Warn.php?do=WarnUserNoPost&id=$userid'>Warn $userinfo[username] (non-post related)</a> <a href='Warn.php?do=ViewWarnings&id=$userinfo[userid]'>View $userinfo[username]'s Warnings</a>
</if>
<if condition="$showviewyourslink==1">
<a href='Warn.php?do=ViewMyWarnings'>View your Warnings</a>
</if>
</if>
<if condition="THIS_SCRIPT=='member' AND $vboptions[warn_allowoffpost]==1 AND $buttons=='Buttons'">
<tr><td colspan="2">
<if condition="$showwarnlink==1">
<a href='Warn.php?do=WarnUserNoPost&id=$userid'><input type="button" class="button" name="warn" value="Warn $post[username] (non-post related)" accesskey="w" onClick="window.location='Warn.php?do=WarnUserNoPost&id=$userid'"></a> <a href='Warn.php?do=ViewWarnings&id=$userinfo[userid]'><input type="button" class="button" name="warn" value="View $post[username]'s Warnings" accesskey="v" onClick="window.location='Warn.php?do=ViewWarnings&id=$userinfo[userid]'"></a>
</if>
<if condition="$showviewyourslink==1">
<a href='Warn.php?do=ViewMyWarnings'><input type="button" class="button" name="warn" value="View Your Warnings" accesskey="v" onClick="window.location='Warn.php?do=ViewMyWarnings'"></a>
</if>
</if>
<!-- end of warning system -->
</td></tr>
</table>
It's not the most well-presented thing, but you can alter it from here to suite your needs. Put that just above $footer and you will be fine (I think).
Rgds