Result of silly regression test on proposed changes to Template:Cite web and colleagues, so I can sleep on it and see if I think of any other required steps

Identified pages currently transcluding at least three of the four templates. I think there are only four such pages.

Compared HTML source before and after with diff -BEabiqsw because my text editors insisted on showing side-by-side diffs without wrapping, so I couldn't even see what was highlighted half the time, due to the length of the lines in raw form.

Manually substituted out the "User:Ryan W/Sandbox/" bit first, so things like section edit links would appear to have the same URLs and not clutter the diff.

Katherine Anna Kang

No change in rendered content, including citations: the diff jumps from the header metadata down to the navbox (which differs because the real article won't link to itself, while the sandbox links to mainspace).

    75,76c74,75
    < 	"datePublished": "2020-06-14T10:54:20Z",
    < 	"dateModified": "2020-06-14T10:54:20Z",
    ---
    > 	"datePublished": "2020-06-22T08:41:00Z",
    > 	"dateModified": "2020-06-22T08:41:00Z",
    91c90
    < 					<div id="contentSub"></div>
    ---
    > 					<div id="contentSub"><span class="subpages">< <a href="/wiki/User:Ryan_W" title="User:Ryan W">User:Ryan W</a>‎ | <a href="/wiki/User:Ryan_W/Sandbox" title="User:Ryan W/Sandbox">Sandbox</a></span></div>
    197c196
    < <div style="font-size: small"><a href="/wiki/Adrian_Carmack" title="Adrian Carmack">Adrian Carmack</a> • <a href="/wiki/John_Carmack" title="John Carmack">John Carmack</a> • <a href="/wiki/Kevin_Cloud" title="Kevin Cloud">Kevin Cloud</a> • <a href="/wiki/Todd_Hollenshead" title="Todd Hollenshead">Todd Hollenshead</a> • <a href="/wiki/Donna_Jackson" title="Donna Jackson">Donna Jackson</a> • <strong class="selflink">Katherine Anna Kang</strong> • <a href="/wiki/J.M.P_van_Waveren_(MrElusive)" title="J.M.P van Waveren (MrElusive)">J.M.P van Waveren</a> • <a href="/wiki/Tim_Willits" title="Tim Willits">Tim Willits</a></div>
    ---
    > <div style="font-size: small"><a href="/wiki/Adrian_Carmack" title="Adrian Carmack">Adrian Carmack</a> • <a href="/wiki/John_Carmack" title="John Carmack">John Carmack</a> • <a href="/wiki/Kevin_Cloud" title="Kevin Cloud">Kevin Cloud</a> • <a href="/wiki/Todd_Hollenshead" title="Todd Hollenshead">Todd Hollenshead</a> • <a href="/wiki/Donna_Jackson" title="Donna Jackson">Donna Jackson</a> • <a href="/wiki/Katherine_Anna_Kang" title="Katherine Anna Kang">Katherine Anna Kang</a> • <a href="/wiki/J.M.P_van_Waveren_(MrElusive)" title="J.M.P van Waveren (MrElusive)">J.M.P van Waveren</a> • <a href="/wiki/Tim_Willits" title="Tim Willits">Tim Willits</a></div>

Doom RPG

Same as above, only there isn't a navbox, so the next thing rendered is the server load statistics.

    75,76c74,75
    < 	"datePublished": "2020-02-23T11:01:27Z",
    < 	"dateModified": "2020-02-23T11:01:27Z",
    ---
    > 	"datePublished": "2020-06-22T08:40:16Z",
    > 	"dateModified": "2020-06-22T08:40:16Z",
    92c91
    < 					<div id="contentSub"></div>
    ---
    > 					<div id="contentSub"><span class="subpages">< <a href="/wiki/User:Ryan_W" title="User:Ryan W">User:Ryan W</a>‎ | <a href="/wiki/User:Ryan_W/Sandbox" title="User:Ryan W/Sandbox">Sandbox</a></span></div>
    365c364
    < Cached time: 20200622085334
    ---
    > Cached time: 20200622085356
    368,373c367,372
    < CPU time usage: 0.112 seconds
    < Real time usage: 0.116 seconds
    < Preprocessor visited node count: 484/1000000
    < Preprocessor generated node count: 2601/1000000
    < Post‐expand include size: 3648/2097152 bytes
    < Template argument size: 1755/2097152 bytes
    ---
    > CPU time usage: 0.108 seconds
    > Real time usage: 0.113 seconds
    > Preprocessor visited node count: 506/1000000
    > Preprocessor generated node count: 2943/1000000
    > Post‐expand include size: 3740/2097152 bytes
    > Template argument size: 1905/2097152 bytes

Doom 4 1.0

Same as the last case.

    75,76c74,75
    < 	"datePublished": "2020-05-06T14:39:43Z",
    < 	"dateModified": "2020-05-06T14:39:43Z",
    ---
    > 	"datePublished": "2020-06-22T08:39:41Z",
    > 	"dateModified": "2020-06-22T08:39:41Z",
    92c91
    < 					<div id="contentSub"></div>
    ---
    > 					<div id="contentSub"><span class="subpages">< <a href="/wiki/User:Ryan_W" title="User:Ryan W">User:Ryan W</a>‎ | <a href="/wiki/User:Ryan_W/Sandbox" title="User:Ryan W/Sandbox">Sandbox</a></span></div>
    396c395
    < Cached time: 20200622083348
    ---
    > Cached time: 20200622085316
    399,404c398,403
    < CPU time usage: 0.284 seconds
    < Real time usage: 0.297 seconds
    < Preprocessor visited node count: 1618/1000000
    < Preprocessor generated node count: 4907/1000000
    < Post‐expand include size: 12403/2097152 bytes
    < Template argument size: 9567/2097152 bytes
    ---
    > CPU time usage: 0.296 seconds
    > Real time usage: 0.309 seconds
    > Preprocessor visited node count: 1731/1000000
    > Preprocessor generated node count: 5363/1000000
    > Post‐expand include size: 13448/2097152 bytes
    > Template argument size: 10657/2097152 bytes