@BlackYps
I fail to see how anyone could argue astro craters is like sim city with a straight face, even allowing for the way in which many people here (as shown on this thread amongst others) seem to look down with disdain on those of us that play such maps (even though they appear to be the most popular types of maps on FAF, at least for custom games). There's more variety in the gameplay on astro than the majority of 1v1 maps on ladder for those not in the highest ratings , where in most cases for ladder it's a case of 'T1 land spam or die' (with having a good APM being far more significant than making good strategic decisions). Perhaps you've just not played enough astro games to appreciate the range of strategies on it (since if you're using your main profile you don't appear to have any games on the map).
I'd have also thought a focus on "the kind of players that faf wants to attract" (in the context of not wanting to attract people who don't like high APM play) very shortsighted. The more people who play faf (in a non-toxic way) the better its longevity/future prospects. Just using myself as an example, while I may play mostly astro I also sometimes play some 1v1 ladder. I doubt I'm the only person who has a favourite style of map such as astro/gap/setons but who also likes to sometimes play other maps or game modes. If all such players were to leave faf because we're 'not the kind of players that faf wants to attract' you get fewer people playing those maps/game mods you approve of such as 1v1 matchmaker.
I also don't understand the logic proposed both here and in the PC election thread for removing the global ranking system. If you had a team of rank 1500s on astro or dual gap against a team of rank 500s (global rating), almost every time the 1500 ranks would crush the 500 ranks. While you may have a greater variance in ability (especially at lower ratings) than with a 1v1 rating, the rating is still a far far better guide to how well someone will play than having no rating at all. Removing the rating just seems like a way of punishing people who are playing maps that don't meet the personal preferences of those suggesting its removal, especially given how bad opti-balance is at balancing a game when you have newer players. As for manually balancing based on knowledge of players, the majority of my games have been from where I've hosted an all welcome lobby, but on average I won't recognise the names of the majority of people who join, and even of those whose names I recognise I'll only know how well some of them play/favoured strategies (there's probably only 4-5 people I could think of off the top of my head where I know how they tend to play and how good that style of play is).
Going back to the OP, while I'd like the idea of an option to play 'lower APM' 1v1 maps (as opposed to currently where I can be given a 1v1 map on a map that's normally seen in the custom lobby as a 3v3 or 4v4 map), and think it would be a more gentle introduction to newer players, if implemented it'd need to be as an option on the existing matchmaker (e.g. you check the box for if you want to play 'new player friendly only' maps, and/or if you're open to playing the full map pool), or else you dilute the number of people on matchmaker even further.
Since as I understand it something a bit like this is meant to happen (I don't think it's working well if it is though), it may be easier to just improve the current system of starting with a small map pool and then adding more complex maps as rating rises.
The 'stone age' mode also sounds like an interesting idea for teaching the gameplay style that's required for 1v1, although I'm not sure how best it would be implemented (if as an option, people may just not choose it and/or it splits the pool of people queuing too much and makes finding games harder; if its as a tutorial mode with AI then people may not be aware of it and/or the AI may not offer enough of a challenge; if it's forced for the first x games then it could put off people who want to experience the full range of options and not be limited to the first tier).