Three points that I could offer:
1.) I had the same ‘issue’, but closer towards my having the same type of email response that I would have to send during a particular time of year, and only then.
It is frequent enough for my to want to keep the “boilerplate/template” of the answer, but not frequent enough over the course of the year that would warrant my even adding a trigger to the items (since I would in any event have to go and look them up again, when the time comes to use them again, every 11 months or so).
My “solution”? I simply created a group inside TE, and placed these types of ‘responses’ over there, without no ‘triggers’ loaded.
When the time of year comes around that I start needing those responses, I then either add a trigger that I will remember (assuming I need to use it several times a day – doesn’t happen often, but varies from year to year) for a while, or simply call up TE, and copy and paste from there.
This is by no means a ‘better’ solution, but I found that saving those types of responses elsewhere, simply saw me having to hunt through different apps/locations to find them. I then realised that I already have TE, and already use it for snippet expansion, so I may as well keep all my snippets in it (even if they are ‘trigger-less’).
2.) I’ve seen a few comments (here and elsewhere) about how it’s tricky to remember triggers that have been added. TE has the ‘reminder’ function, that pops up a notification to remind you of a snippet (and its trigger), if you type something you already have inside TE. It also suggests a snippet if you have recently re-typed a particular phrase/word over and over.
Whilst it can be a tad annoying sometimes, it generally does help me to remember – and, AFAIK, TE is still the only text-expanding app that does this.
3.) I also struggled to search for my existing snippets – or add new ones, since I mostly struggled to remember what shortcuts I had set-up to either do an inline search, or do a ‘general’ search of snippets in TE, or add from clipboard/selection/create new snippet.
My solution was to use KM, and cause a Conflict-palette pop-up when hitting Hyper-key+T…
Now, searching in or adding anything to TE is one shortcut away – which I find far more useful, and is consequently something I use far more frequently.