Character Concepts you wished would work in D&D?

[Spriteless]

I liked the Warlord in 4e. One of its special abilities was just giving an ally an extra attack. So simple and straightforward, for 4th edition.

In general, 5th edition characters who make other 5th edition characters shine are either bards, or a caster who has cherry picked spells from their catalogue. The system could use more characters who share the spotlight. I mean, I like the Prism off DM's guild, but 3rd party homebrew still has a bad name from 3rd ed days.

Could also use a 3rd class that isn't flashy magicy supernatural woo woo, for those who play down to earth campaigns and want to get past 5th level. Warlord would fill that gap. As would a tinkerer who makes traps and tricks that aren't magic items.