mellored
Legend
I have a mix of those.The obvious fix for flexibility in short rest abilities is to give a warlord point that can be spent on any short rest warlord invocation any time you take a warlord short rest invocation.
The obvious fix for scalability is to grant access to new stronger invocations at appropriate levels. Maybe level 3, level 5 and level 11.
You get 1 warlord point at level 1, 2 at level 5, 3 at level 11, and 4 at level 17.
Invocations automatically upgrade.
And there are short rest limits on some abilities.
I just call my warlord points "reactions".
The auto scaling "half your warlord level", "your proficiency bonus", or "your Int modifier".
And short rest abilities are either "when you roll initiative" or "a creature can only benifit/fall for this trick once".
Also, things like advantage work just as well at level 1 as they do at level 20. So no scaling needed on those.