Tried doing nyalotha, some old bfa raids, they should be lvl 50 and as 70 you should be able to one shot every boss for millions of dmg. Instead you die, impossible to do without a 5-10 man team. The whole idea of legacy content is to be super easy to solo, so you can experience it at your own pace check everything out and get transmogs. It’s absolute bs to have 20 level lower content kill the player. Who wants to look for random people to do old stuff they probably done so much they don’t wanna go back ever again? Such a waste of time trying to find people and manage the time etc.
Turn the normal scaling back on so we get a 5000% more dmg multiplier and can enjoy soloing the old raids. SL raids should be 60 and “hard” but still doable alone. BFA raids at 50 should be one shot every boss. This is so stupid…
This is the only bit of your OP that I disagree with. SL raids should be doable in small groups, so there would be LFG groups for Transmog Runs.
I think it should be:
1 expansion ago, Dungeons (even Mythic) should be soloable. Raids need a small group (on Mythic at least).
2 Expansions ago Raids should be soloable. Bosses in Mythic Raids might still need a little time to kill but mechanics should be reworked to allow for solo play.
3+ Expansions ago all bosses should die in one or two hits.
This gives a raid one expansion of a full group play, one expansion of small group play, one expansion of solo play that still needs some gear / skill. So roughly six years of gameplay before becoming completely zergable.