well, my kind of H Protagonist is Male, well cuz i'm a Male. Female protagonists are overrated and overused. there hardly any good Male Protagonist in most H Games up today. i prefer Male Protag that you can put your name and customize it yourself cause i find it more satisfying to play as yourself. i do enjoy some games with Good Male Protag in it. by Good Male Protag, i mean they aren't typical Luka-ish protagonists. a lot of good male protag comes from Alicesoft's Dai series but too bad, too fucking bad Alicesoft likes to throw in some RAPE which RAPES most of the main Heroine. all of my RAGE to you, Alicesoft (they got me REAL REAL REAAAALLLLLL BAD in Toushin Toshi 3)
most H Games should takes a very, very very very good example from Cherry Poi's Zurine games. it's simple Action game with simple graphic yet soooooo many peoples are crazy about it (including me as well). it is one of the very few H games that doesn't have astonishing graphics yet able to bring the H into the H Game. Eushully games are fun in terms of gameplay. but damn shame they only offer CGs, and it's lack of Quantity. Eushully games are good for gamers, but definitely not good for fappers. grinding is fun and quest stuff too but when H Games fails to deliver the H, it just fails.
another one would be games by Illusion, everybody's favourite 3D H Game developer. well, pretty much only the "Artificial" series worth the shit. they're good with making Trailers for their crappy games so don't get tempted by it, it's a Trap.
we need more Male Protagonist that is not some Luka boy. Males gets their nice share of Rape-able females ranging from monster girls to mechanical girls, though i'd like to see any real H game involving raping Mechanical girls as games like this is soo sooooo rare nowadays. or even better you play as Male to turn male enemies to become your bitch by genderswapping them. i think nobody has ever done this before. would LOVE to see how it works.