With the kind of setup outlined above, Ireland would become independent and neutral before the usual start of the war
Ireland is quite often a player in MP. The norm is to force them to stay democratic and join the Allies.
They weren't 100% independent in 1939 and if anything joining the war would've decreased their autonomy. And I think realistically at least their overseas forces would've been placed mainly under British command like other dominion forces.
Obviously in MP dominion players tend to be more autonomous than IRL but as a simple fix I added an event in my MP mod that turns Ireland into a dominion of the UK upon joining the war. I've also got a focus tree for them in the mod but it's somewhat simplistic. Not sure you can really do a very fleshed out Irish focus tree without going into fantasy la-la land, which I vehemently oppose.
I've also been slightly annoyed by this, but I suppose making additional leader change events and portraits wasn't deemed worth it. (And I think having one democratic leader with unique portrait is preferable to having one with unique one and others without.) Maybe they'll be added eventually.
Adding a few portraits and leader change events is at least 10x less laborious than the fantasy formable nation crap they're adding with Waking the Tiger.
I'm all for having at least Egypt as a puppet.
Egypt actually wasn't in the older vanilla version HoIs (other than as a releasable), which makes sense when you look at what they did in WW2.
They had next to no military and would cause problems for the UK player because of the way building in subject territory is handled in the game. They'd need a massive MP nerf and PDX would have to allow building e.g. RADAR within subjects regardless of subject tech level for it to work.
Even then the country just wouldn't be fun to play unless you'd go full arcade mode and allow Egypt to field armies.
The RADAR problem btw is already in the game with Malaya, which PDX added so Australia could do their singleplayer "master of Asia" memes with it.
HoI1-3 had Nepal, Bhutan, Iraq, Oman and Yemen as UK puppets.
Nepal joined the war in September 1939 and provided thousands of men to the Allied cause. Best handled as a puppet in-game.
Bhutan was treated as an Indian Princely State. They had basically no army and didn't contribute to the war. Britain controlled their foreign affairs. Best handled as a puppet with a massive manpower debuff or no manpower at all.
Iraq had British bases on its soil to maintain the supply of petroleum and was arguably still a British puppet. They cut off relations with Germany in September 1939 but didn't declare war. There was a pro-Axis coup in 1941 that was crushed in the Anglo-Iraqi War. They then joined the war against Germany in January 1942. Best represented as a puppet with a focus tree, events and a considerable manpower debuff.
Oman joined the war in September 1939. Didn't contribute in the way of troops. The British built airfields there due to its strategic location. Best represented as a puppet and should probably have a big manpower debuff.
Yemen was hostile to the British after WW1 but was subdued by 1934. Neutral in WW2. Best represented as British military access, a guarantee of independence and probably a manpower debuff.