I really liked the game but to me the problem with Deadfire's combat is that they did two things to combat. First, they removed a lot of useless fights that had only one reason, that was to make you use your camping supplies in the original. Second, they made combat way faster in the sequel, easy fights in PoE would take 15-30 seconds and this is the time I take on hard fights in the sequel. To me that's why it feels there is not a lot of combat in the game, is the combination of faster combat and less trash mobs to obligate you to use camping supplies.
To me they need to just add a few more encounters and the amount of combat encounters will be good because I like the new pacing of combat in Deadfire and I like that most of the combat in game can be avoided by either talking, sneaking or using some other clever tactics and that is also another reason that makes we feel like there is not a lot of combat.