Avoid passing parameters multiple times when calling xsl template repeatedly - xslt-1.0

Question

I have a template that is being called with (not an exaggeration) roughly 100 parameters or so. I need to call this template several times as I need to alter the parent node(s) - sometimes it does not exist, sometimes there are several nodes, and there are several values that can be taken.
For example an example snippet of the current setup:
<xsl:choose>
<xsl:when test="$test='1'">
<body1>
<body3>
<xsl:call-template name="template1">
<xsl:with-param name="param1" select="$previouslydefined1" />
.
.
.
<xsl:with-param name="param100" select="$previouslydefined100" />
</xsl:call-template>
<body3>
</body1>
</when>
<xsl:when test="$test='2'">
<body2>
<xsl:call-template name="template1">
<xsl:with-param name="param1" select="$previouslydefined1" />
.
.
.
<xsl:with-param name="param100" select="$previouslydefined100" />
</xsl:call-template>
</body2>
</when>
<xsl:otherwise>
<xsl:call-template name="template1">
<xsl:with-param name="param1" select="$previouslydefined1" />
.
.
.
<xsl:with-param name="param100" select="$previouslydefined100" />
</xsl:call-template>
</otherwise>
</xsl:choose>
I feel there must be a better way of doing this (probably several) without typing out a huge chunk of parameters repeatedly, but I'm drawing a blank.
I have two methods which I know don't work, but possibly there is a modified implementation that would.
Choose statement around the nodes individually (fails - bad syntax):
<xsl:choose>
<xsl:when test="$test='1'">
<body1>
</when>
<xsl:when test="$test='2'">
<body2>
</when>
<xsl:otherwise/>
<xsl:call-template name="template1">
<xsl:with-param name="param1" select="$previouslydefined1" />
.
.
.
<xsl:with-param name="param1" select="$previouslydefined100" />
</xsl:call-template>
<xsl:choose>
<xsl:when test="$test='1'">
</body1>
</when>
<xsl:when test="$test='2'">
</body2>
</when>
<xsl:otherwise/>
</xsl:choose>
Use a value to set the node (fails - values can be empty in which case tag should not exist):
<xsl:element name="{$node}">
<xsl:element name="{$node2}">
<xsl:call-template name="template1">
<xsl:with-param name="param1" select="$previouslydefined1" />
.
.
.
<xsl:with-param name="param1" select="$previouslydefined100" />
</xsl:call-template>
</xsl:element>
</xsl:element>
I also understand that it should be possible to use tunnelling (maybe) - I'm checking this possibility now.

Answer 1

Seems I messed up my original implementation of setting the nodes via a parameter. It is possible to leave the values empty in which case the nodes are not created which is what I was originally looking for. By using the maximum number of possible nodes necessary and then filling as necessary I can the template only once:
<xsl:element name="{$node}">
<xsl:element name="{$node2}">
<xsl:call-template name="template1">
<xsl:with-param name="param1" select="$previouslydefined1" />
.
.
.
<xsl:with-param name="param1" select="$previouslydefined100" />
</xsl:call-template>
</xsl:element>
</xsl:element>