That's compelling, and completely untrue, but alright.
You didn't get a real response because your own response was stupid. "Disproportionate burden" is not something that you will be able to adequately define, and most events that are "slightly" job restrictive (voidwatch) are typically done with so many people that the "adding an additional person" isn't a particularly valid argument either.
Let's go through the events one by one. If jobs are excluded because a top tier (insert job here) is incapable of making a contribution (Note, I don't mean that certain jobs aren't the
most effective) to the event, it will be noted.
1.)
LV75 Content
This can be done on virtually any job as long as you have a job with innate healing capacity with you. There are virtually no restrictions, anywhere. Occasionally things will be immune to physical damage or magical damage. Some content has a minimum number of participants.
Odin I is a special case in that Ninja is highly favored by the fight due to Migawari. It is not however, compulsory a this is a 6-person event and it only uses Geirrothr predictably three times. Sacrificing 3 people while the others run away at the right time will also work just fine. This is obviously not a reasonable strategy if you're multiboxing a bunch of mules. Perhaps this would be what you consider a "disproportionate burden?"
2.) Meeble Burrows
Enemies in Meeble Burrows are on the whole extremely weak. Scholar is a favored healer due to this, and a Scholar can solo heal pretty much the entire event, but a White Mage is fine too. Certain fights are more difficult, but virtually any melee job is capable of contributing. One DD and one healer works, but 2 DDs and 2 healers is probably the "ideal minimum." You are rewarded for bringing more people, so "adding additional players" can be beneficial, not detrimental. Time limits are very forgiving.
3.) Salvage 2: A very friendly event to most jobs, with the exception of the Hydra boss which is a bit nastier than the others. Still, Scholar is arguably the best healer for this event and you're fighting one boss and Embrava + Regen V makes it difficult to die. A White Mage is fine too and there are some arguments for Red Mage on certain bosses. It is understood that you will adjust your support based on your targets, but there isn't all that much that favors DDs over the other (besides the general friendliness toward MNK that salvage possesses anyway) as the time limit is very lenient, but perhaps you'd like to post a few paragraphs educating me on the value of five minutes.
4.) Neo Nyzul has had its difficulty significantly reduced and pretty much any top-tier melee of any class is likely capable of making a valuable contribution - I want to say probably even BST but even I'm shaky on making that claim.
5.) Voidwatch there a a few nastier fights where several jobs cannot reliably participate (Botulus Rex). But even Provenance Watcher offers significant leeway after the most important "Proc-master" positions are filled. It is understood that you will fill the "proc-master" positions and acquire adequate support, but a variety of melees can offer significant DPS contributions beyond dead weight. Perhaps killing in 3m25s vs. 3m02s should constitute "disproportionate burden?"
Occasionally jobs will be rendered ineffective versus specific targets due to natural damage type resistances, but even these can usually be bent.
Addressing by Tier:
Cities: As the JPs put it, "Job Unquestioned." Your goal is to get enough people to actually go there and do it and you don't really have much room to be picky if someone wants to actually do the fight with you.
Jeuno I-II, Zilart I-II: See "Cities."
Jeuno III: Similar to "Cities" but it might be slightly to your benefit to start restricting your melees based on competency at this point, whereas it didn't particularly matter before.
Jeuno IV-V: Generally weaker than Jeuno III.
Zilart III: Similar to "Jeuno III" except you often need to fill a slot with a PLD.
Jeuno VI - Past: Kalasutrax is unfriendly to physical damage in the first place, but the other two posess no inherent qualities to exclude "non-traditional DDs."
Job-restrictive only in the case of Kalasutrax.
CoP climb:, ToAU Climb: Enemy level and defense begins to rise at this point, rendering one-handers at a disadvantage but a top-tier one-hander can still contribute. Still, ensuring proc diversity is a bit more of a concern than it was previously.
Bismarck: Often fought with job restrictive strategies. One handers are particularly ineffective.
Significantly job-restrictive.
Morta: More friendly than Bismarck to melees but still high level. More or less requires a Paladin and competent stunners.
Slightly job-restrictive.
Provenance: High level enemies, high buff situations. One-handed jobs are disfavored but can still respectably contribute if offered proper support in strong groups, but it's generally not worth it. These fights require more support in general which limits slots available.
Job-restrictive.
6.) Abyssea The days of "we don't do Abyssea without these 5 jobs" is over. Face it, chances are if you're in Abyssea you're either fighting worms or soloing something with the company of your left hand.
I already listed Odin II and Legion as being restrictive events. The vast majority of content in this game is not job-restrictive as long as you have satisfied the basic requirements of the event (which is in most cases, a healer).
