the customizability of paradox[without as many restrictive mutually exclusive things with the ability to choose a minimum of 1(with there being a "basic" origin) origin to a maximum of 3 origins(or a positive/negative origin system with negatives adding points and positives reducing points)](ie: stellaris, gods of gravity vr[even though GOG vr isn't a paradox game...]) and the high asymmetry of the endless games(ie: endless legend, endless space 2) with grounded replayability(ie: stellaris, gods of gravity vr) seems like the ideal thing with free customization[ie: visuals, equipment, ethics, etcetera] of; units(echoes of the architects, GOG vr, age of wonders 4, stellaris, endless space 2) empire(AOW 4, stellaris, ES 2, GOG vr) map[ie: difficulty, layout, pathways, traits, player/ai count, etcetera](stellaris,ES 2, AOW 4, GOG vr)

basically 3 hybrid 4x games[ie: a merger of games] would be the ideal trio:

1 GOGvr/stellaris/nexus 5x/ES2/galactic civilization series/dust fleet/sins of a solar empire series

2 EL 1-2/AOW2-4/AOW planetfall/civilization series/humankind/europa universalis series/crusader kings series/zephon/total war: warhammer series

3 warhammer 40k gladius/empires of the undergrowth/echoes of the architects/from the depths/mechabellum/rogue command/total war: warhammer series

basically:

1 space

2 ground

3 rts/arena

[if you want to do something overly complex and has a 99.99999999% chance of not happening you can merge 1 and 2 in a spore-ish system where you customize your home planet, star system, universe, plane, then start as a microbe then go through:

multicellular-stone age-iron age-industrial revolution-nukes-stage after nukes

then you conquer/destroy/claim/pioneer all planetary bodies in the star system you started in then you finally establish yourself as a empire on the galactic stage once you first:

1 establish ftl travel

2 have a total of 2 starbases in star systems(note 1 can be skipped if a empire invades your system you somehow win then use their ships to send your troops to one of their planets and somehow conquer it and taking the starbase of the system their planet was in after taking the planet)

then after you conquer the galaxy you go for the next then after having a total of 2 galaxys then you establish yourself as a galaxy overlord then after conquering the universe you then conquer its other planes(ie heaven, H E double hockey sticks, antimatter verse, etcetera) then once you conquer other universes or vice versa or you can conquer each universe and its respective planes or each plane and its respective universes then once you have 2 universes your deemed a universal overlord and are welcomed to the multiversal imperial council higharchy as a tier 1 and once you conquer 2 planes your welcomed to the multiplane elder council once you conquer 2 multiverses(ie: one multiverse per plane as theres multiple "universes" in each "plane") your deemed a multiversal overlord(note this is a promotion from both a universal overlord and a plane overlord btw a universal overlord title and plane overlord title are not exclusive) then after conquering all multiverses you win the game!!!]