Warlight would be more strategically varied and challenging if players were penalised a little less in the opening 5-10 turns for choosing not to make an attack.
Capture territory each turn or die, true.
Sometimes it is really challenging to get reinforcement card as fast as (or faster than) your enemy, but I don't really like this to be honest. Mainly because when you add that to other settings, it's too much luck dependent.
Yet I don't think "reinforcement card +5" is that awful now.
I mean, it's not the first (nor 2nd or 3rd) thing I would change in the 1vs1 Strategic settings if I could.
It's somewhere in the middle of my list.
I prefer no reinforcement cards at all, but for a totally different reason.