In that scenario, the sending should have used a more appropriate analgesic, or timed it better. Perhaps they would have if they knew the patient was going by BLS.
None of those examples are good arguments against a tiered system, since every one of them would have a paramedic dispatched anyway.
Honestly, I think the pendulum has swung too far in this area. It used to be that analgesia rated as a very low priority and we did a poor job of providing it even when really needed. Now though, I think we take the "everyone deserves fentanyl" sentiment too far. Not every twinge of discomfort requires an opioid. I would agree that it's generally better to err on the side of providing analgesia when it isn't really needed vs. not often enough, but the shotgun approach where we narc everyone up isn't necessarily a good thing. But this is a topic deserving of its own thread.
If they don't seem to be in any significant amount of pain, I'll defer pain management to the ER. "10/10" said with a straight face and a 0 to 2 on the FACES scale can wait until after triage, for example. I'm liberal with pain management only if it appears that they can really benefit from it, not so much for every little thing. If they appear comfortable, I reason that the ED can hopefully find a non-opiod route to treat them, so that they're not impaired afterwards. I lump in Zofran with comfort care - it's miserable to be nauseous, and even more uncomfortable to vomit. I'm more liberal with Zofran than anything else, for the most part. I don't even need to drop a lock for that one.
I greatly favor a tiered system over an all-ALS system. If a patient needs pain managemernt, call for ALS. For sick calls and abd. pain, if they're stable with no orthostatic changes and clear L/S, they can go BLS. A 12-lead should be performed for any pain between the neck and umbilicus, as well as possible atypical MI signs such as dizziness and nausea. You don't need medics for that either - put a monitor on every BLS unit, have the BLS obtain a 12 -lead, preferably two, and transmit to the receiving ED for interpretation. That's what they do in rural areas where ALS coverage is inconsistent or non-existent. The cost of the monitor should be less than the pay differential between a medic and an EMT, as well as the cost to stock ALS equipment and meds.
Even strokes were BLS in NYC. If they could maintain their airway, and were not hypotensive, they went BLS, a diesel bolus being the priority. That's actually how I roll here - quick vitals and stroke assessment, move to the rig, check BGL, then a line and 12-lead if I have time. That's the only time I don't get the 12-lead on-scene within 5 minutes.